On the distant planet of Cybertron, a relentless war between The Autobots and Decepticons has depleted the energon reserves of their home world. Optimus Prime decides to lead an expedition out into space and search for a new source of energy, but their ship is pursued by the Decepticons, led by the merciless Megatron. As the two forces collide, they end up being sent on a collision course with the planet earth. The crash landing sends the Autobot and Decepticon forces into a slumber that lasts millions of years, until they are finally awakened by a freak volcanic eruption. Adapting the forms of various Earth technologies, the Transforming robots now battle to gain control of the planet's rich energy resources, with the noble Autobots eager to prevent the Decepticons from endangering the human population on the planet...
The Autobots meet Sparkplug Witwicky and his son Spike who they saved from the accident caused by the Decepticon attack. Meanwhile, the Decepticons continuing their search for energy resources and next on their list are Sherman Dam and the crystals from the ruby mine. Can the Autobots stop them?
With the Autobots' constant failures to stop them, the Decepticons are after the rocket fuel, the final source they need. Now the desperate Autobots must try for one last time to stop the Decepticons.
The Decepticons created the space bridge that should transport them back to Cybertron. While Bumblebee and Spike were spying on them they got captured. With Spike as prisoner, they sent Bumblebee (possessed by an evil Decepticon chip) to lure other Autobots into a trap.
Chip Chase, a new Autobot friend, creates the Anti-Matter formula and the Decepticons are after it. Can the Autobots protect their friend and stop the Decepticons?
During the battle with the Decepticons, Optimus Prime is heavily damaged. Wheeljack's diagnosis is that he can be fixed, but he need a device which is on Cybertron, so the Autobots must go to get it. But Megatron won't let things go so easily.
The Autobots are exploring the life of dinosaurs and Wheeljack comes up with the idea of creating robot dinosaurs who will work for the Autobots. With Optimus Prime's approval, Wheeljack and Ratchet create the Dinobots - Grimlock, Slag and Sludge. But it turns out that they are very dangerous and destructive, so Optimus orders their permanent deactivation. Yet they are also the only ones who can help the Autobots when they fall into Decepticon trap.
The Decepticons kidnap Sparkplug and they use him as a guinea pig for their ally, Dr. Arkeville, who invented the hypnochip which will turn people into mindless slaves. Meanwhile, the Autobots must stop the Decepticons from using their newest invention which would bring Cybertron to Earth.
The Autobots are too late and Cybertron is already near Earth ,so Megatron plans to transport all the energon resources they have to Cybertron. Now ,the Autobots must travel to Cybertron to stop the Decepticons and save Sparkplug.
While the Autobots on Cybertron are trying to save Sparkplug ,the Autobots on Earth must stop the Decepticons from draining the planets resources using humans as slaves.
A meteor falls from outer space, and crashes on Earth. The Autobots sent Dinobots to guard the meteor which possess enormous amounts of energy. Naturally, Megatron sets out to steal the meteor. He talk Dinobots into betraying Optimus Prime, telling them that they are way more powerful then him. The Dinobots kidnap Optimus Prime and the meteor, while Wheeljack and Chip are building two new Dinobots who'll have to save Optimus.
Starscream has made an alliance with Dr.Arkeville and he use his time-bomb which will explode in 8 hours and destroy the entire Earth. The Autobots and the Decepticons race to Arkeville's secret lab in order to find the traitors ,but soon they realize that they must work together in order to stop the bomb.
The Decepticons are in the Arctic. They find the frozen Cybertronian whom Starscream recognizes as his old friend Skyfire so he becomes the newest member of the Decepticons. Soon the Autobots arrives on the scene and during the battle Skyfire realizes he might not be fighting on the right side.
Megatron challenges Optimus Prime to a duel where the loser must leave Earth along with his troops and Optimus Prime accepts. Meanwhile the Constructicons, a new subgroup of the Decepticons, create a machine which will charge Megatron with all the power of his troops.
The Autobots have discovered that the Decepticons are planing to use an ancient crystal as energy for their new weapon. While Spike, Bumblebee and an unnamed girl are going for the crystal which is an amulet for girl's people, the other Autobots are going after Megatron and his new weapon.
The Decepticons meet Insecticons - a group of Decepticons who came to Earth before Optimus Prime's and Megatron's teams. Now with their allies, the Decepticons are determined to destroy their enemies once and for all.
Spike has been injured during the Autobot battle with the Decepticons ,and the only way to save him is that they ,until the operation ,transfer his mind into a robot called Autobot X ,which Sparkplug created out of junk.
Wheeljack invents the Immobilizer - a machine which can turn anything solid matter. Unfortunately, the Decepticons managed to steal the machine. Carlie, new Autobot friend, feeling responsible for the loss of the Immobilizer, tries to get it back from the Decepticons, but they capture her. Now, the Autobots must rescue Carlie, and the Immobilizer, before Megatron use it on his deadly foes.
During their exploring mission, Bumblebee and Powerglide, discover the mysterious island, intact by time, inhabited with dinosaurs. The Autobots are realizing that it would be a perfect place for the Dinobots to learn how to control their wild nature, so Powerglide, Spike and the Dinobots are heading for the island. Meanwhile, the Decepticons also found out about the island which is also rich with sources of energy.
While the Decepticons were draining the energy sources on Dinobot Island, they unknowingly opened several time portals in the world. One transported barbarians on the woolly mammoths, the other one a pirate ship, and the third one a band of cowboy outlaws. The Autobots must send these time visitors where they came from, close all time portals, and stop the Decepticons from destroying the Dinobot Island.
The Decepticons steal the Electrocells in purpose of creating energy. Meanwhile, Cliffjumper notices that Mirage is acting strange because of which he thinks that Mirage is a traitor. What he doesn't know is that Mirage actually tries to turn the Insecticons against the Decepticons. Until Mirage is captured by the Insecticons.
The Autobots must protect a first human-made fighting ninja female robot called Nightbird from the Decepticons. But, the Decepticons still managed to steal it. And while the Autobots are looking for her, Nightbird, now programmed by the Decepticons, is heading to destroy the Autobots.
The Decepticons kidnap Gears and use him and slave to help them built the Solar Needle - a device that drains the energy from the sun. But the sun's state soon becomes critical and the Autobots must stop the Decepticons before the sun is destroyed.
During the battle with the Autobots, Optimus Prime gets damaged. Megatron uses him to create a clone of Optimus Prime with the purpose of luring Autobots into a Decepticon trap. But the plan soon goes wrong, and real Prime survives. How will the Autobots know which Prime is real?
The Desepticons discover the secret city of Subatlantica that lies under the ocean. Megatron makes an alliance with King Nergil, and together they are off to take over Washington D.C., and to destroy the Autobots. But Starscream soon discover that King Nergil is planing a plot against Megatron.
Megatron manages to place a device into the Autobot repairing chamber which will turn them all evil. Soon, all the Autobots becomes evil, except Bumblebee and Jazz who with the help of Spike and Sparkplug will have to find a way to turn the others back to normal.
An archaeologist group has found the remains of the Desepticon space ship which crashed 4 million years ago. Megatron hears about this and he is off to take over the ship. In the remains of the ship, he finds the Heart of Cybertron - a matter that gives limitless energy. Megatron places the Heart of Cybertron into himself and now he plans to destroy the Autobots once and for all.
Grapple and Hoist want to build the Solar Tower which will provide the enormous amounts of energy, but Optimus Prime doesn't approve it because it wouldn't be protected from the Decepticons. Meanwhile, the Constructicons who apparently left the Decepticons, are offering their help to Grapple and Hoist in order to build the Solar Tower. But what Grapple and Hoist doesn't know is that it's all a Megatron's set up
The Insecticons attack the Nova Power Plant and feed on it's core, the resulting surge of proton energy causes them to grow in size, Prime discovers the protons will cause the Insecticons destruction, as well as anything near them, unless a care is found in time...
Megatron infiltrates the Quantum Labs and reprograms TORQ III - a super computer which seals the entire building and no one can't get out. The Autobots are called to help, but they are attacked by battle tanks operated by TORQ III.
Megatron is making an alliance with a millionaire Shawn Berger. He convinces Berger that the Autobots are evil with couple of fake videos made by Decepticons. Berger is using his power to prove this to the city, and the Autobots are soon being arrested.
The Autobots have been found guilty, and banished from Earth, while Megatron set the coordinates of their ship to the Sun. Without Autobots to worry about, Megatron now starts his tyranny on Earth, while the Autobots, who realized that they were set up, are trying to get back to Earth.
While the Autobots tried to protect their new weapon - the Negavator from the Decepticons, Red Alert had been damaged. He convinces everybody that he is OK, but he thinks that everybody are planing plot against him. Meanwhile, Starscream who wants to get revenge on Megatron is making an alliance with Red Alert and they are off to steal the Negavator themselves.
The Decepticons are invading New York City and there they build their new headquarters - the New Cybertron. The Autobots arrive at New York, and Optimus Prime soon, got captured. The Autobots soon, manage to find Prime, and they realize that the Constructicons disassembled him.
The Autobots and the Decepticons are getting weak, and they realize that the reason is that they running of the cybertonium. If they don't get more cybertonium, they will die soon. Suddenly Carly is coming up with the idea of sending Dinobots to get it.
The Dinobots were off to intersect the shipment of cybertonium for the Decepticons, but they transported themselves to Cybertron. Since none of the Autobots is capable, Spike and Carly must go to Cybertron to bring the Dinobots and the cybertonium back.
The Desepticons are blocking all communication signals on Earth using the Voltronic Galaxer which is on the moon, and while Blaster and Cosmos are going to the moon to stop them, the other Autobots are helping humans to preserve order.
Starscream, Ramjet, Rumble and Ravage accidentally discover a time transporter which led them to medieval time. Starscream decide to stay in this world and enslave it. But they don't know that they were followed through time transporter by Warpath, Hoist and Spike.
While being chased by Astrotrain, Starscream and Thrust through outer space, Cosmos lands on a planet Titan and its people believes that the Transformers are sky gods.
The Decepticons plan to suck the Earth's energy from the Earth's core, while the Autobots invented the device which will help them to control Devastator, making him their ally in the fight against the Decepticons.
Tracks partners up with Raoul, a street punk to stop the series of car stealing, organized by Megatron.
Megatron uses his new weapon - the Transfixatron on the Autobots and as a result, the Autobots remain in trapped in their vehicular modes. While the Decepticons are taking the captured Autobots away, Wheeljack and the other Autobots who weren't captured must create a machine which will neutralize the effects of the Transfixatron.
Beachcomber finds the hidden lake of electrum - the golden substance that can make Transformers invulnerable. While he hides it from the others, the Decepticons also finds the Golden Lagoon and they use the electrum to become indestructible and to destroy the Autobots.
The crops all around the world are endangered by the Insecticons, so Cosmos, Spike and Bumblebee are of to find a special robotic insecticide. Unfortunately, when they return they will unintentionally also bring a horde of metallic plants.
Optimus Prime puts Omega Supreme on a mission against the Constructicons, but what he doesn't know is that they had a history together - without happy ending.
Autobots and Desepticons are transported on another planet where they are found by an alien kid Aaron who sees them as toys.
While they were in space, Autobots were captured by Bosch, a space pirate and gambler. In order to save the others, Smokescreen partners up with Bosch in gambling with putting his friends themselves at bet.
Megatron is sending a group of Desepticons on Cybertron to help Shockwave fighting a group of Female Autobots. They capture their leader, Elita One, and use her as bait to lure Optimus Prime (who is in love with her) into a trap.
Blaster and Tracks must stop the Desepticons from turning people into slaves with the help of special disco club.
Lord Chumley, a mad big game hunter, and a collector of extraordinary vehicles wants the head of Optimus Prime for his collection and he captures several Autobots and use them as bait to lure Optimus into his trap.
The Desepticons are after Astoria, a young CEO who knows the secret energy formula. But she is being rescued by Powerglide and while he tries to protect her, an unusual love-hate relationship develops between the two.
Astrotrain and Blitzwing have imprisoned Megatron and started their conquering of Earth which is going slightly out of control.
Several Autobots arrives on an alien planet ruled by evil Deceptitran who enslaved its inhabitants. Also, several Decepticons arrives on the planet to help Deceptitran defeat the Autobots, and they soon capture Bumblebee. While the Autobots are fighting to save their friend and free slaves, Seaspray is falling in love with one of the planet's rebels.
Several Autobots are trying to become movie stars. During the movie filming, one of Desepticon actions is caught on tape, and fearing that the Autobots might see that tape, Megatron wants it destroyed.
In order to even the odds against the Autobots on the ground, Megatron creates Stunticons - a new Desepticon subgroup that transforms into land vehicles. But the only one who can give personalities to the Stunticons is Vector Sigma - a Cybertron's super computer that gives life to the Transformers. So the Decepticons are of to Cybertron and Vector Sigma with Autobots on their tails.
After Stunticons got their personalities the Desepticons went back on Earth, but Megatron brought with him the key that activates Vector Sigma which may cause a disaster. Meanwhile the Autobots on Cybertron create Aerialbots in order to fight against Stunticons.
Slingshot and Skydive go undercover to catch the mysterious plane thieves with the help of a boy called Hassan. The two Aerialbots realize that the Desepticons are responsible for the robberies, but will they be able to report what they learned, and is Hassan all what he seems to be?
The Autobots have captured Stunticons and five of them disguise themselves as Stunticons hoping that will be able to spy on the Desepticons and stop their plan.
In order to activate the mystical weather-controlling Pearl of Bahoudin, Megatron sends Stunticons to find a special alloy which is in the racing car of Auggie Cahnay, a race car driver.
The Aerialbots are sent into Cybertron's space where they learn about the origin of Optimus Prime and his first encounter with his arch enemy Megatron.
Megatron is infected with a disease called Cosmic Rust. He kidnaps Perceptor and force him to cure him. After he recovered, Megatron intend to infect the Autobots with the disease!
Megatron accidentally creates a mischievous creature of pure electric energy called Kremzeek and he release him on the Autobots.
After another failed attempt to destroy Megatron, Starscream is exiled to a desert island where he finds the remains of the old WWII vehicles. He rebuilds them and gives them the sparks of five Desepticon criminals. The Combaticons are born. Starscream now leads his new army to destroy the Autobots and to get revenge on Megatron.
The Combaticons have rebelled and they take over Cybertron. The Autobots and the Decepticons will have to join forces once more to defeat a common enemy.
The Combaticons (all except for Swindle) got scrapped after a battle with the Autobots, and Swindle needs to repair them. He throws their spare parts on the scrap-yard where they are found by three kids who use them to create their own robot for a school-project.
Deep within the depths of space, the planet-killer Unicron carves a nightmarish path of death and destruction en route to the planet of Cybertron. Meanwhile, a ruthless surprise assault on their City by the Decepticons leaves the Autobots leaderless. Hunted by Unicron's relentless agent Galvatron, the Autobots travel to distant planets and meet new foes and new friends. With the fate of the Autobot Matrix of Leadership and Cybertron itself at stake, can one heroic figure rise forth and light this most darkest hour?
While the Autobots are celebrating the end of the war (as seen in the movie), the Desepticons are starving from energon. Cyclonus and the Sweeps realize that the only one who can save the Desepticons and lead them to victory is Galvatron and they're off to find him. Meanwhile, Kup, Ultra Magnus and Spike are kidnapped and the other Autobots think that the Desepticons are responsible. While Arcee and Springer are off to rescue them, Rodimus Prime and Grimlock are spying on the Desepticons.
After Rodimus and Grimlock saw weakened Desepticons, they realize that they couldn't abduct their friends, but soon they were discovered and attacked by the Desepticons. Springer and Arcee save them right on time and Rodimus falls into deep trans as he goes deep into the Matrix and learns that the Quintessons are the kidnappers. Meanwhile, Cyclonus and the Sweeps have found Galvatron at the lava lake on the planet Thrull, but it seems that something is wrong with their leader.
Determined to destroy the Autobots, the Quintessons destroy their home planet Quintessa hoping that the explosion will destroy them too. The Autobots survive but without a ship, as they find themselves on the sticky planet called Goo. Blurr and Wheelie who were supposed to deliver the transformation cog of Metroplex to the Autobot City on Earth are trapped on one of Jupiter's moons. Meanwhile the Quintessons make a deal with the Desepticons that they will give them enormous amounts of energon if they destroy the Autobots.
The Desepticons attack the Autobots on Goo, but soon Galvatron arrives to reclaim his leadership over the Desepticons and to destroy the Quintessons. But they make a deal with Galvatron promising to him the certain Desepticon Matrix. Soon, the Autobots are rescued by Wreck-Gar, and Rodimus goes deep into the Matrix once more where he learns that the entire race of the Transformers is made by the Quintessons themselves who now want revenge. The Decepticons attack both Cybertron and Earth, but without Blurr, Wheelie and Metroplex' transformation cog, the odds aren't looking good for the Autobots.
Blitzwing accidentally overhear the Quintessons' plan to get rid of the Decepticons after they destroy the Autobots. He reports what he heard to Galvatron, but he doesn't listen to him, so he ask Autobots for help. While the Autobots at the Autobot City on Earth wait for Blurr and Wheelie to get the transformation cog of Metroplex - the only Autobot who can stop Trypticon, who is terrorizing Earth.
A Quintesson scientist kidnaps Ultra Magnus, Cyclonus, Wreck-Gar and Marissa in order to study them. But soon, the captives started the rebellion and the ship lost control as it's heading for a black hole.
The Autobots are investigating the case of destroyed Earth's Defence Command's shuttle. The trail leads them to a planet Dread terrorized by a giant monster Chaos who have unsettled score with Kup from long time ago.
While Rodimus and the other Autobots were attacked by the Desepticons, they were rescued by none other then Optimus Prime who is apparently alive and ready to reclaim his leadership over the Autobots. But is everything alright with him?
Starscream's ghost, who possessed Cyclonus' body makes a deal with an exiled Desepticon Octane to overthrow Galvatron.
Octane and Trypticon make a deal with Abdul Fakhaddi, the ruler of Carbomya. They will steal all the world's monuments for Fakhaddi in return for his oil which apparently makes much better and more powerful energon then usual.
While trying to stop the Quintesson scientist from opening the time portal, Perceptor, Blaster, Blurr and Wreck-Gar travel to Cybertron's past where they have to help the rebellion to overthrow the Quintessons. To makes things worse, the rebels' leader A3 was transported into present.
Daniel and Wheelie want to prepare a surprise birthday party for Ultra Magnus. But they don't know when he was created, and neither anyone else for that matter, so they're off to Autobots storage asteroid which keeps all vital Autobot information. But they're being followed by the Desepticons.
Daniel and Grimlock are accidentally transported to another dimension where they find themselves in the middle of battle against two powerful wizards, which lasts for hundreds of years.
Galvatron harasses the power of a harmonious musical frequency and molds it into a weapon to use against the Autobots...
The Desepticons have taken over a planet inhabited by a group of pacific Autobots who doesn't believe in war, and they're being used as slaves. But their leader Sandstorm managed to escape and asks the Autobots on Cybertron to help them and convince his people to defend themselves.
The Desepticons can't stand Galvatron's insanity any more, so they lure him on planet where they treat mental patients. But the treatment doesn't going as planned.
Starscream's ghost is back and this time he possesses Scourge. He goes to Unicron (or what's left of him) and ask him for a new body. Unicron promises Starscream a new body, but only if he do something for Unicron.
The Quintessons trick Galvatron into journeying to Cybertron and releasing a Trans-Organic, a precursor to the Transformers, on the planet. The Trans-Organic begins depleting all around it of their energy, turning Autobot and Decepticon alike into energy vampires...
The Quintessons kidnap Daniel and use a special machine to turn Daniel's nightmares into reality.
The Desepticons have stolen Metroplex' transforming cog and First Aid is blaming himself for it. He believes that he doesn't fit in with the other Autobots and leaves.
Two warring planets, Xetaxxis and Lanarq, are on the verge of destroying one another, the Autobots try desperately to negotiate a peaceful resolution to the crisis. Meanwhile, a Quintesson signal is detected by the Decepticons, which leads them to a device containing archived records of the Quintessons many dealings. Learning that this journal carries vital information on the war between Xetaxxis and Lanarq, the Autobots battle their arch foes for possession of the journal, whilst the warring planet delegates, eager to destroy the other, make separate deals with the Quintessons...
The Quintessons invade the planet Junkion and use subliminal messaging tactics to convince the Junkions to be efficient and tidy...and that all other races are their enemies. When the transmitter sending out the messages is damaged in a battle between the Autobots and Decepticons, the Junkions decide to send their message across the galaxy, leading to warfare erupting on numerous planets...
Crime lord Victor Drath enlists the aid of former terrorist leader "Old Snake" to trap the Autobots and transfer their minds into human bodies, allowing him to seize their robotic bodies and do with them as he pleases. The humanized Autobots resolve to find their original bodies and reverse what has been done to them...
Grimlock is given an intelligence boost when he tries to disable a power generator and is able to create a whole new set of Transformers, the TechnoBots. Galvatron schemes to destroy the Autobots by placing lethal anti-electrons inside the generator, but when his plans go awry, Cyclonus and Scourge travel to Unicron to try and retrieve new anti-electrons...
Marrissa Fareborn and the Technobots become involved in the dodgy dealings of Dirk Manus
A malevolent energy being known as Tornedron begins to tear through the galaxy, draining the Autobots and Decepticons of their life force. A powerful entity summons all of the more primitive Transformers and charges them with the defeat of Tornedron. Their journey takes them to a distant moon, where they encounter Tornedron's creator, the devious Primacron...
When he loses the Matrix to the Decepticons, Rodimus Prime decides that enough is enough and quits the Autobots. Meanwhile, Scourge sneakily uses the Matrix to overthrow Galvatron.
Landing on the planet Zamojin,, Perceptor becomes trapped in his alternate mode and is installed in a female robot called Nijika. He befriends a blacksmith and together they try to warn the planet that the Quintessons, who had previously attacked Zamojin,and locked it out of regular space, have returned...
When scientist Jessica Morgan is injured in a battle between the Transformers, her father and Gregory Swafford, her colleague, vow revenge and use the body of the deceased Optimus Prime as bait for the Autobots. Upon locating Prime, the Autobots, as well as the interfering Decepticons, are infected with a deadly virus that drives them insane. The virus soon spreads over half the galaxy, infecting others. With Rodimus and many others compromised, Sky-Linx embarks on a dangerous mission to retrieve the one force capable of restoring the fallen Optimus Prime to life, but will he be in time?
Successfully revived, Optimus Prime and the remaining Autobots plot their next move against the Hate Plague victims as the virus rapidly spreads across the galaxy. Learning of a precious metal alloy that could shield him from the affects of the plague, Prime and his allies journey to Charr where they forge an uneasy alliance with Galvatron. Acquiring the alloy, Prime prepares to engage the infected Rodimus Prime in a battle to reclaim the Matrix of Leadership and discover the means to halt the plague, but is Prime ready?
Optimus Prime begins receiving a series of visions connected to the fate of Cybertron as the Decepticons launch an attack on Autobot City. Seizing the key to the Plasma Energy Chamber, the Decepticons seek to harness it's power, but a struggle with the Autobots sends the Transformers to a distant planet locked in a civil war...
Caught up in the civil war between the peaceful Nebulans and the corrupt Hive, Spyke, Daniel, and the Autobots hatch a daring plan to turn the tide in their favor, but the Hive catches word of their plan and plots a similar gambit with the Decepticons. The giant Scorponok is soon unleashed. Meanwhile, Optimus Prime, on a vision quest, journeys deep into the heart of Vector Sigma..
Galvatron takes Cybertron to Earth, determined to use the energy of the Plasma Energy Chamber to ignite Earth's sun and turn it into a nova. Daniel comes up with a plan to use a Nebulan city as a weapon against Scroponok, whilst Optimus and the Autobots wage a decisive battle with the Deceptions and The Hive, with the fate of Cybertron and Earth hanging in the balance...