Emma Swan, a bail bondsman, is surprised when Henry, the son that she gave up for adoption 10 years earlier, shows up on her doorstep. He begs Emma to come to his hometown of Storybrooke, Maine, and rescue him from his evil adopted mother, Regina Mills. The boy insists that everyone in the town is a fairy tale character with no memory of who they really are... and Emma soon realizes that Henry's claim may be true.
Songs: The Black Keys -- Howlin' for You
Regina tries to drive Emma out of Storybrooke by hook or by crook, involving Dr. Hopper in her schemes. Meanwhile, Sister Mary lends an unexpected hand to Emma, and Mr. Gold hints to the mayor that he knows more than she suspects. Meanwhile, the origin of the Dark Curse that destroyed the Land of Fantasy is revealed.
Henry convinces Mary Margaret to read to the John Doe patient, insisting that he's her Prince Charming. Mary Margaret reluctantly does so, but is surprised by the results. Meanwhile, in flashback Prince Charming and Snow White meet for the first time... and possibly the last.
Songs: Lloyd Green -- Red River Valley
In Storybrooke, Emma tries to help Ashley Boyd, a young pregnant maid who tries to make a deal with Mr. Gold. Meanwhile, in the fairy tale world, Cinderella makes a deal with Rumplestiltskin but discovers the price is more than she is willing to pay.
Graham makes Emma the town deputy, apparently setting off a collapse at a nearby mine. When Henry goes into the mine to prove his theory, he soon becomes trapped. Meanwhile, in the fairytale world, Jiminy discovers that he can't leave his parents to be who he truly wants to be.
In the real world, David finds himself drawn to Mary Margaret despite Kathryn's wishes. Meanwhile, in the fairy tale world, the man who will become Prince Charming is forced to accept his destiny.
After kissing Emma, Sheriff Graham begins to remember his past life as the Huntsman... the man who the Evil Queen tasked with killing Snow in the fairy tale world.
Emma runs for sheriff rather than let Regina fill the position, and discovers that she has a surprising benefactor. Meanwhile, in the fairy tale world, a human Rumplestiltskin learns what he must do to keep his son safe from the war.
Songs: Sonic Youth -- Kool Thing
Emma tries to help two orphaned children by locating their father, well aware of what will happen to them if they're put into the foster care system. Meanwhile, in the fairy tale world, Hansel and Gretel are abandoned by their father and the Evil Queen offers her help... for a price.
Regina asks Emma to investigate the Stranger, who has taken an interest in Henry. Meanwhile, Dave and Mary Margret try to reconcile their feelings to each other. And in the fairy tale world, James and Snow try to reunite although a kingdom stands in their way.
Sydney recruits Emma to help him find the evidence he needs to bring down Regina. And in the fairytale world, a Genie grants King Leopold three wishes, and the king grants the Genie his freedom... with tragic results.
Mary Margaret goes out with Ashley and Ruby for Valentine's Day, and Mr. Gold has something stolen from him. Meanwhile, in the fairytale world Belle is forced to give up everything she knows to keep her village safe... by living with the Beast.
While David considers the best way to tell Kathryn the truth about his affair with Mary Margaret, Emma has a date with the mysterious stranger. In the fairy tale world, James seeks out a cure for Abigail's lover so that at least one of them can have a happy ending.
When Leroy falls in love with a nun, Astrid, he helps Mary Margaret sell candles to raise money so that Astrid and her sisters aren't forced out of Storybrooke. Meanwhile, Emma begins the investigation into Kathryn's disappearance. And in the fairytale world, a newly born dwarf, Dreamy, falls in love with a fairy.
While Emma tries to determine if David murdered his wife Kathryn, she hires Ruby as an assistant when the waitress quits her job to go out into the world and find something to do with her life. Meanwhile, in the fairy tale world Red and Snow meet as a savage wolf plagues the village where Red lives.
When Mary Margaret is arrested for murder, Emma tries to clear her friend's name despite pressure from Regina. Meanwhile, Henry finds a fellow believer and David goes to Dr. Hopper to recover his lost memories. And in the fairytale world, a Snow White that no longer remembers her true love seeks to kill Queen Regina.
Emma searches for a missing Mary Margaret, but is abducted by a man who claims to know the truth about Storybrooke... and Emma. Meanwhile, in the fairytale world, Regina convinces a sorcerer to take her to Wonderland to recover something that the Queen of Hearts has stolen from her.
Emma closes in on the real murderer to clear Mary Margaret's name, but discovers that someone close to her may have betrayed her. Meanwhile, in the fairtytale world, Regina choose true love over power, but her mother Cora has a harsh lesson to teach her.
Gold is intrigued by August and tries to determine who he really is. Meanwhile, David tries to apologize to Mary Margaret and Emma gets a break in the case of Kathryn's abduction. In the fairytale world, Baelfire makes a deal with his father Rumpelstiltskin when it becomes clear that his magic powers have corrupted him.
August offers to show Emma how she can regain Henry by telling her the truth about her life. Meanwhile, Regina attempts to seduce David and Mary Margaret returns into teaching. In the fairytale world, Gepetto is told that he can save Snow and Charming's child, but insists on saving his son Pinocchio as payment for his work.
Regina tries to find a way to maintain the curse, and discovers that she needs an artifact from her past to stop Emma. Meanwhile, in the fairy tale world Queen Regina forces Snow to choose between her life and her love.
When Henry is stricken down by a curse intended for Emma, Emma must work with Regina and Gold to find a cure. Meanwhile, in the fairytale world Prince Charming makes a deal with Rumpelstiltskin to find Snow.
Emma Swan's arrival into Storybrooke and her destiny to save the town from the evil queen's curse; characters' back stories and secrets are revealed; a preview of season two.
The people of Storybrooke realize who they really are... and set out to confront Regina, who they believe is responsible. Meanwhile, in the fairytale world, Prince Phillip and Mulan rescue Aurora from her sleeping curse, but a mysterious wraith stalks Phillip and he may be forced to make the ultimate sacrifice.
Songs: Lou Reed -- Charley's Girl
While Regina goes to Gold to get her magic back, the townspeople turn to David after they discover that no one can leave the town without paying the ultimate price. However, David is busy trying to find his missing wife and daughter. Meanwhile, in the fairytale world Regina tries to escape her mother's clutches and must turn to Rumpelstiltskin for help.
Emma and Mary Margaret meet with Lancelot, leader of the survivors, and seek out the wardrobe so they can return to Storyrbooke. Meanwhile, Henry tries to reunite Jefferson with his daughter and asks David for the chance to help find his mother and grandmother. In the fairytale world, King George curses Snow and sends his men to kill James.
In the real world, Belle decides to leave Gold when she realizes that he isn't being honest with her. However, someone else from her past threatens her future. Meanwhile, in the fairytale world, Rumplestiltskin discovers that his wife Milah isn't dead as he believed and goes to confront the pirate captain that took her.
In the real world, Regina tries to give up magic but her resolve is challenged when she discovers that Dr. Whale is performing experiments on Regina's dead fiance. Meanwhile, in the Enchanted Forest Emma and the others meet Hook, while in the fairytale world Jefferson finds an ally to help Regina bring back her dead lover, Daniel.
Mary Margaret and Hook scale the beanstalk to recover the compass from the Giant. As she climbs, Emma remembers the one time that she fell in love and was abandoned... unaware of the whole story of what happened.
When one of the townspeople turns up dead, suspicion falls on Ruby, who has faced her first full moon since the curse broke. David defends his friend but DA Spenser seeks revenge on David and tries to exploit the situation. Meanwhile, in the fairy tale world, Red discovers that her mother is still alive and can teach her how to embrace her wolf nature.
In the Enchanted Forest, Emma and Mary Margaret attempt to find a way to contact Henry, while Hook makes a deal with Cora. Meanwhile, in the real world David realizes that he has to enter the netherworld and make contact with his wife so that he can tell her how to defeat Cora.
Songs: The Brymers -- I Want to Tell You
While David lies in a coma, Gold and Regina plan to make sure that no one comes to Storybrooke through the portal. Meanwhile, Emma and Mary Margaret race Cora and Hook to the portal, and in the land that was, Regina makes a startling revelation to her mother.
Regina tries to show the people of Storybrooke that she has changed, but things go awry when she's accused of murder. In the fairytale world, Snow and James must decide what to do with the Evil Queen.
Songs: The Airbourne Toxic Event -- Timeless
Gold finds someone to use as an experiment to see if he can cross the borders of Storybrooke without losing his memory. Meanwhile, Mary Margaret and David have a difference of opinion, and Belle confronts Hook. In the fairytale world, Belle sets out on a quest with Mulan to defeat a terrible beast.
While the townspeople decide whether to let the outsider live or die following his car crash, Dr. Whale suffers a crisis of confidence. As he flees into the night, he remembers what happened to him in his original life and his failed attempts to bring his brother Gerhardt back to life. Meanwhile, Cora reaches out to Regina and Gold reaches out to an amnesiac Belle.
Hook takes David and Mary Margaret to his ship and reveals Cora's secret weapon: Anton the Giant. When they free him, he mistakes David for James, the man who betrayed him in the Enchanted Forest, and goes on a rampage. Meanwhile, Emma takes Henry and Gold out of Storybrooke, and in the fairy tale world, Anton has his first encounter with humans... including one named Jack.
In New York, Emma confronts Gold's son Bae, only to discover that he is her ex-lover, Neal. Meanwhile, in Storybrooke, Hook helps Cora and Regina locate Rumplestiltskin's dagger. And in the fairytale world, Rumplestiltskin goes off to war and receives a cryptic warning from a blind seer.
In the fairy tale world, Snow's mother Queen Eva lies dying and the girl must make an impossible choice. Meanwhile, in the real world, Hook travels to New York to kill Gold, and David and Mary Margaret try to stop Cora and Regina from obtaining the Dark One's dagger.
Emma, Neal, and Henry bring Gold back to Storybrooke to find a cure for Hook's poison, and Regina and Cora prepare to kill the pawnbroker and take his power. Meanwhile, in the fairy tale world, a miller's daughter named Cora unwisely boasts to a king that she can spin straw into gold. When he challenges her to do so, Rumplestiltskin comes to her aid... for a price.
Gold is forced to intervene when Regina comes up with a way to get revenge on Mary Margaret and bring Henry back into her life. Meanwhile, 28 years ago, Regina wakes up in Storybrooke, the town created by her curse, but soon discovers two outsiders that could pose a threat to her plans.
Songs: Talking Heads -- This Must Be the Place (Naive Melody)
Mary Margaret goes off on her own to come to grips with her role in Cora's death, and meets August... who has transformed back into wood. Meanwhile, Neal introduces Tamara to Henry and Emma, and then decides to tell her the truth about his life. Meanwhile, two years earlier, August is in Hong Kong trying to find a cure for his condition and has an unexpected encounter.
Songs: Joan Jett
-- Bad Reputation, Gabriela -- Got It
When Regina gives Belle the memories that she was originally supposed to have because of the curse, Gold asks David for advice in how to reach his love's true feelings. Meanwhile, Regina learns of Anton and his field of magic beans. In the fairytale world, Belle release a thief that tried to steal from Rumplestiltskin, and the Dark One forces her to accompany him on his hunt for the man.
Songs: Tori Kelly -- Fill a Heart (Child Hunger Ends Here), Gary Wright -- Love Is Alive, Metallica -- The Day That Never Comes
Regina comes up with a plan to use a failsafe built into her curse to destroy Storybrooke and its residents while she and Henry escape to the Enchanted Forest. When Henry rejects her, Regina turns to Hook... who has allies of his own. Meanwhile, in the fairytale world, Regina has Rumpelstiltskin disguise her as a peasant so that she can find the renegade Snow and kill her.
When Regina disappears, Emma, Mary Margaret, and David search for her and discover that the magic portal beans have disappeared as well. Meanwhile, Lacey's attraction for Gold grows when she learns that he can do magic. In the past, Bae arrives in 19th century London and is taken in by the Darling family, and befriends their daughter Wendy.
While Regina tries to delay the end of Storybrooke after Greg and Tamara set off the failsafe, David and Hook race to get the magic beans and create a portal so the townspeople can evacuate. Meanwhile, decades ago in Neverland, Hook takes Bae under his wing and must decide whether to give him up to the Lost Ones or not.
Cast members and executive producers discuss the show, spotlighting the themes of family and magic. Included: a look back at the characters' journey to Neverland, and a look ahead to the emergence of the Wicked Witch of the West.
Hook pilots the Jolly Roger to Neverland so that Emma and the others can find Henry, abducted by Greg and Tamara. Meanwhile, Henry's abductors discover that everything isn't what it seems. And Neal wakes up in the Enchanted Forest and discover that he must seek out the castle of his father if he wishes to see Emma again.
As she searches for Henry with the others, Emma meets with Pan, who gives her a map but warns that it will only lead her to her son if she admits who she is truly is. Meanwhile, in the fairy tale world, Snow White is willing to give up her kingdom and her people when the Evil Queen offers to spare her life if she will go into exile.
In Neverland, Hook suggests that they recruit Tinker Bell to lead them to Pan's camp... unaware that Regina has a dark history with the fairy creature. Meanwhile, in the Enchanted Forest comes up with a way to get to Neverland and rescue Emma and Henry.
In Neverland, Gold must decide whether he will sacrifice his life for Henry... who the prophecy says will be his undoing. Things become complicated when he meets Neal, who he had believed was dead. Meanwhile, in the fairytale world, Bae is abducted by a mysterious Piper and Rumplestiltskin sets out to find his son and take revenge on his abductor.
Hook convinces a dying David that the key to their escape from Neverland lies atop Deadman's Peak, and convinces David to accompany him to find it. Meanwhile, Emma, Mary Margaret, and Regina come up with a plan to contact Henry and assure him that there's still hope. And in the past, the man who will one day become Hook sets sail with his brother Liam to find a rare healing plant for their king.
Regina leaves the group to find Gold and convince him to launch a magical assault on Pan. Meanwhile, Emma and the others learn that Neal is being imprisoned in Echo Cave, but they must pay a heavy price to free him. And in the fairy tale world that was, Snow White is on the run and meets a mermaid named Ariel, who asks for her help winning the love of Prince Eric.
Ariel travels to Storybrooke to help Belle find Gold's object that can imprison Pan for all eternity. However, two men from the Home Office are prepared to stop them at any cast. Meanwhile, in Neverland, Mary Margaret is furious at David for lying to her, while Emma finds herself the third point in an uncomfortable love triangle as she tries to capture Pan's Shadow and use it to escape Neverland.
While Pan tricks Henry into sacrificing his life by making him believe that he will save Neverland, Emma and the others try to stop him before it's too late. Meanwhile, in the fairy tale world, a young Rumple and his father Malcolm travel to Neverland but find out that it's not what they expected.
While Emma and Regina work together to try and find a way to save Henry before it's too late, eleven years in the past, Regina turns to Gold for help when she decides she wants to adopt a child to fill the emptiness in her life.
The heroes return to Neverland with Henry, unaware that Pan has swapped bodies with the boy. Pan soon uses his insider status to find out where Regina has her vault... and the magic stored within it. Meanwhile, in the fairy tale world, Snow sets out to find a way to kill Regina for good by using the head of Medusa.
To stop Pan, Gold must reverse the spell and put him back in his proper body, while Regina undos the curse to stop Pan's curse from destroying everyone in the town. However, stopping the curse will require a price that everyone in Storybrooke must pay.
Emma and Henry make a life for themselves in New York City, their memories of their lives in Storybrooke removed. However, Hook comes to find Emma to tell her that she's the only one who can help her parents. Meanwhile, a year ago in the Enchanted Forest, Snow White and David return with the people of Storybrooke but discover that someone has taken over their castle.
Emma teams up with Regina to find out who in town cast the memory-loss curse, while David and Hook search for missing townspeople and make a horrifying discovery. Meanwhile, a year in the past, Regina meets the intruder in her castle and learns of their connection.
Zelena continues to infiltrate Mary Margaret and David's lives, while gathering totems of power. Meanwhile, a year ago in the Enchanted Forest, Charming goes on a quest to overcome his fears and comes to the aid of a princess trapped in a high tower.
The hunt is on for the Wicked Witch in Storybrooke, but she's closer than anyone suspects. Meanwhile, Neal returns and discovers that his father is alive, and vows to find him. Meanwhile, a year ago in the Enchanted Forest, Belle and Neal return to Rumplestiltskin's castle to find a way to bring back Neal's father, but discover that there is a terrible price to be paid.
Zelena challenges her half-sister Regina to a magical duel, well aware that with Gold on her side, she's unbeatable. Meanwhile, in the past Zelena seeks out her past and goes to the Wizard of Oz, who tells her everything she needs to know.
In the present, Ariel returns to Storybrooke and Hook agrees to help her find her lost love, Prince Eric. Meanwhile, Regina teaches Emma in how to develop her magic so that together they can take on Zelena. Nine months earlier in the Enchanted Forest, Hook agrees to help Ariel find Eric, a quest that reunites him to his old ship, the Jolly Roger... now under the command of the dread pirate Black Beard.
Regina summons the spirit of her mother to find out why she abandoned Zelena, while Zelena tries to convince Gold to serve her voluntarily. Meanwhile, in the Enchanted Forest that was, Cora tries to marry royalty but is tricked and betrayed.
In Storybrooke, Emma and the others realize that Henry must recover his memories if they hope to break the curse and find out what happened in the missing year. They're unaware that Zelena has threatened to kill Henry if Hook doesn't strip Emma of her magic. Meanwhile, in the Enchanted Forest during the missing year, after meeting with Glinda, Snow and Charming realize that they must take extreme measures if they hope to defeat Zelena.
When Mary Margaret goes into labor, Zelena makes her move to gain the fourth component she needs for her spell to travel back into time and change her destiny. Meanwhile, in the distant land of Oz, Glinda offers Zelena membership in the Sisterhood of Witches. However, the arrival of a young girl named Dorothy changes everything.
Zelena's death succeeds in opening the time portal, which sucks Emma and Hook in and sends them 30 years into the past... and to the Enchanted Forest. While trying to find a way back, they inadvertently alter history and now Snow and Charming may never meet... and Emma may never be born.
To restore history as they know it, Hook and Emma must convince Snow to steal Prince Charming's engagement ring. However, when the Evil Queen captures Snow, Emma is forced to watch as her mother-yet-to-be is burned at the stake.
Regina deals with the repercussions of losing Robin after Emma brings his wife from the past, and turns to an friend for help. Meanwhile, a mysterious ice princess arrives in Storybrooke and unleashes chaos. In the past in the kingdom of Arendelle, Elsa and Anna discover that their parents were killed trying to find a cure for Elsa's condition, and Anna sets out to find the same cure.
Elsa traps Storybrooke within a wall of ice while trying to find Anna, but is unable to release them... and puts Emma's life in danger. Meanwhile, when the power goes out, the townspeople insist that Mary Margaret deal with the crisis. And in the past, Anna visits David and helps him learn how to fight so that he can defeat the dreaded warlord Bo Peep.
Marian falls under a freezing curse and the townspeople believe that Elsa is responsible. When Emma and David go to Robin's camp to look for clues, they find Will Scarlet, who leads them to the culprit. Meanwhile, in the Arendelle of the past, Elsa and Kristoff go to find the urn that Hans plans to use to imprison Elsa, and encounter the Snow Queen.
To prepare for his first real date with Emma, Hook blackmails Gold into restoring his left hand. However, the pawnbroker warns that all magic comes with a price. Meanwhile, Will tries to steal a book from the library. In the Enchanted Forest of the past, Anna has no choice but to agree to do a favor for Rumplestiltskin return for knowledge of why her parents traveled to see the Dark One.
Emma tries to convince a reluctant Regina to help her find the Snow Queen, only to discover that Regina is lying to her about Sidney's whereabouts. Meanwhile, David convinces Mary Margaret to go on a date, but the date turns into a hunt when Will escapes his jail cell. In the past, Emma befriends another young orphan who isn't all that she seems.
While Emma and Regina track down the Snow Queen's ice cream truck and find a clue to her connection to Emma, Belle sets out to right a wrong that she did to Anna long ago... by using Gold's dagger to compel him to help. In the past, Anna agrees to take Belle to Grand Pabbie to restore her memories of what happened to Belle's mother.
Emma and Elsa manage to capture the Snow Queen, unaware that she wants to be captured so that she can play on Emma's self-doubts. Meanwhile, Robin chooses between Regina and Marian, and Henry attempts to learn the secrets of his grandfather's pawnshop. In the past, Ingrid learns of her powers and her sisters Helga and Gerda vow to stand by her no matter what.
Gold manages to imprison the Snow Queen and plans to strip Emma of her light magic for his own purposes. Meanwhile, Robin asks Will to help him find the storybook's author, and Emma grows increasingly frantic as her powers run out of control. In the past, Elsa frees Anna and together they try to trap Ingrid within the urn.
Gold continues with his plan to use the Sorcerer's Hat against Emma so that he can free himself from the Dark One's dagger. Meanwhile, Regina isn't convinced that she will ever find her happy ending, but Mary Margaret convinces her otherwise. In the past, Ingrid turns Anna against Elsa and learns what she must do to obtain her third sister.
The Snow Queen unleashes her spell, and the townspeople try to prepare a cure before sundown. Gold forces Hook to use the Sorcerer's hat to drain the fairies of their power and use it to escape Storybrooke himeslf. Meanwhile, Elsa and Emma try to find Anna, who may hold the cure to the town's survival. In the past, Anna and Kristoff seek out Black Beard to obtain the Wishing Star that will let them free Elsa from the urn.
As Storybrooke descends into chaos as the Snow Queen's spell takes hold, Emma and Elsa try to trick Regina into destroying the ribbons so that they can attack the Queen. In the past, Ingrid adopts Emma and attempts to show the girl that she's a powerful sorceress.
As Emma tries to find a way to get Elsa, Anna, and Kristoff back to Arendelle, Gold uses Hook to prepare the way for his departure from Storybrooke. In the past, the Queens of Darkness abduct Belle to force Rumplestiltskin to give them one of his magical artifacts.
Gold recruits Ursula and Cruella to help him get back into Storybrooke so that they can all obtain their happy endings. Meanwhile, the townspeople try to get back to their normal routine. However, when Belle finds a way to release the trapped fairies, she unleashes an evil creature that wrecks havoc on Storybrooke.
Mary Margaret and David try to find out what Cruella and Ursula are up to, without revealing to Emma that their pasts are intertwined with the Queens of Darkness. Meanwhile, Regina and Henry go to Pinocchiio in the hopes that he can reveal something about the Author. In the past, the reason for the Charmings' secrets is revealed.
While Regina works to gain the trust of the Queens of Darkness, Gold initiates his own scheme to regain his dagger. In the past, Regina seeks out Maleficent to learn magic, but discovers that her would-be mentor is the one who needs help.
While Gold tortures August for the information of the Author, Hook makes a deal with Ursula to learn Gold's plans. In the past, Hook and a young Ursula form an alliance so that each can get what they want, but Hook is forced to betray the young woman.
Songs: Ashman and Menken -- Fathoms Below
Regina risks her cover to delay Gold from getting the page of the book. Meanwhile, Emma learns the truth from her parents, and has a change of heart. In the past, Snow and Charming take Maleficent's child to save their own, but discover that the price is more horrible than they could have imagined.
Gold offers the Author refuge to avoid Emma and the others. Meanwhile, in the past, Robin is forced to undetake a job for Rumplestiltskin to save his tavern... a job that takes him to Oz.
Cruella abducts Henry in an attempt to force Emma and Regina to kill the author for her. In the past, a woman confines a young Cruella to the attic after the death of Cruella's father, but a mysterious reporter comes with an offer to take the girl away.
Songs: Mel Leven -- Cruella de Vil
Regina asks Emma to go with her to New York to get Robin back from Zelena, in return for helping her find Maleficent's daughter. Meanwhile, Gold asks Will to help him steal Belle's heart back. In the past, Emma meets Lily again.
Regina and Emma return Lily to her mother, but the reunion doesn't go as planned. Meanwhile, Gold gets worse and loses Isaac to a rival. In the past, Cora tries to unite Regina with her soul mate, but has her own ulterior motive.
Isaac rewrites the heroes' and villains' happy endings, and finds himself a best-selling author. Henry is the only one who is unaffected, and enters Isaac's new book to try and undo what has happened and restore his family.
In Isaac's new reality, Henry and a cowardly Hook rescue Emma and try to reunite Regina with Robin. Meanwhile, Isaac tells Rumplestiltskin what he must do to save his happy ending.
The people of Storybrooke are forced to turn to Zelena for help when they realize that Emma has disappeared from the real world. Meanwhile, Emma tries to fight the temptations of the Darkness and meets a possible ally.
At Camelot six weeks earlier, Regina tries to impersonate the Savior when Arthur explains how they must free Merlin and fulfill the prophecy. However, one of the knights knows Regina as the Evil Queen and swears revenge. In the present, Hook tries to free Emma from the Darkness, while a Fury comes to take Robin to the Underworld as the price for the magic Regina did in Camelot.
Arthur turns to David for help when he discovers that someone has stolen a magic bean from the Reliquary, and they turn to Belle for help. Meanwhile, Emma invites Hook to have lunch with her as part of her plan to free Excalibur from the Stone. In Camelot, David and Arthur quest for a toadstool that may provide the key to freeing Merlin.
In the past, Arthur threatens to tear his marriage asunder in his quest to restore Excalibur. Meanwhile, Guinevere and Lancelot enter the Dark One's Vault to find the Dagger, and Guinevere is forced to make a deal with Rumplestiltskin. Six weeks earlier in Camelot, Mary Margaret and Lancelot prepare to hide the blade, but discover that Arthur has an unexpected ally.
Emma discovers how Merlin was imprisoned in a tree, and must take drastic steps to acquire the one necessary ingredient... steps that will lead her into darkness. Meanwhile, in the current Storybrooke, the townspeople decide to have a block party to lift everyone's hopes. Henry turns to Emma for help find Violet's missing horse, and Regina and the others learn that Emma has Excalibur.
Six weeks earlier, Belle travels with Merida to help her defeat the clans and rescue her brothers. In the present, Emma continues her efforts to turn Gold into a hero by forcing Merida to threaten Belle's life. When the couple try to leave Storybrooke, Merida transforms into a bear and attacks Belle. Meanwhile, the others discover that Arthur is lying to them.
Six weeks earlier, Emma and Merlin quest for the Flame which can reunite the two parts of Excalibur. Meanwhile, Regina and the others sneak into Camelot to recover the two pieces. However, things go horribly awry. In the distant past, the origin of Merlin's powers and the first Dark One are revealed.
In the present, Hook takes desperate measures to find out what Emma is hiding from him during their time in Camelot. Three weeks earlier, Emma must make an impossible choice when she must decide whether to give up the Darkness or use it to save her future.
Arthur convinces Zelena to help him seek out a magical helm that will let him compel his men to find Merlin and Emma. However, they soon cross paths with Merida, who is seeking the helm because her father Fergus bargained with the witch to obtain it. Together with two new friends--Ruby and Mulan--Merida races to find the helm and the man who killed her father.
Three weeks earlier, Hook sets in motion the events that will lead to everyone returning to Storybrooke with their memories erased. In the present, Hook challenges Gold to a duel but has an ulterior motive. Meanwhile, Emma tries to convince Henry that he can trust her even though she's a Dark One.
The Dark Ones bind themselves to the living so that they can remain in the real world... and the townspeople will be taken to the Underworld in their place. Emma tries desperately to find a way to stop the Dark Ones' plan, but the others accept the inevitably and spend their last moments together. In the past, Regina tests Hook by leading him to his father and offering him transportation to the real world once Hook proves that he has no weaknesses for Cora to exploit.
Emma and the others arrive in the Underworld to find Hook, and discover that the place is a dark mirror of the Storybrooke that they know. Meanwhile, in the past, Henry contacts Cora to tell Regina to give up her quest for vengeance, but unwittingly releases his wife back into the world.
An escapee from Hades' prison brings word of Hook's location... and the fearsome beast that guards him. To defeat the creature, Mary Margaret seeks out the help of an old friend, but discovers that he's not as brave as he once was. In the past, a young Snow receives advice from a demi-god on how to face her fears and save her people.
Gold turns to Milah for help when he assists Emma in rescuing Hook from Hades' prison. Meanwhile, Regina discovers that her magic is working again, and in the past, Rumple makes a deal with a healer to save Bae. However, the deal is not to Milah's approval.
In Underbrooke, Hook questions whether he is worthy of forgiveness after meeting his brother Liam. In the past, Liam makes a deal of his own to save himself and his brother... at the cost of a ship's worth of men. Meanwhile, Henry meets the Apprentice and learns of his true power.
Hades forces Gold to transport Robin and Zelena's baby to the Underworld, but inadvertently brings Zelena and Belle as well. Meanwhile, David and Mary Margaret try to contact Neal. In the past, Hades travels to Oz to help Zelena gather the components for her time travel spell, but makes a surprising discovery in the process.
Hades sends Gaston after Gold so that Gaston can get his revenge on the Beast that killed him. However, Belle soon discovers that Hades has another motivation. Meanwhile, in the past, Belle and Gaston meet for the first time.
While David and Mary Margaret try to find a way for one of them to escape the Underworld, Ruby explains to the others how she and Mulan met Dorothy... and why she has to return to Oz.
Regina turns to Cora for help when Zelena insists that her love can reform Hades. In the past, the circumstances between Regina and Zelena meeting for the first time are revealed when Regina is injured by Cora's magic.
Hades offers to release the heroes from the Underworld if they help him recover Zelena from Peter and Gold. However, when the heroes discover that Hook can't leave with them, Emma and Hook go on a perilous quest. In the past, Emma looks for answers to her past.