Lucas McCain and his 10-year-old son, Mark, head to North Fork, New Mexico in search of a place to settle. Lucas, a well-known rifleman, enters a local turkey shoot competition and butts heads with Jim Lewis who rigged the competition in favor of Vernon Tippert in order to win the grand prize.
Lucas McCain and his son, Mark, are ready to settle on their new land. However, the two are interrupted by Sam Montgomery and Billy Lehi, a pair of thugs working for Oat Jackford. When Lucas refuses to sell his land to the thugs, they burn his place down. Lucas then heads out to confront the duo.
After saving Mark McCain, outlaw Will Fulton begins to see the benefit of living a good life as he recuperates with Mark and Lucas.
Lucas gives a has-been marshal a chance to make it back into the limelight.
Mark becomes enamored with his uncle, a rodeo star.
Mark is kidnapped by a man who blames Lucas for his son's hanging.
North Fork is shocked by the arrival of an Italian count and Sim Groder, a cattle buyer, is not happy by the arrival.
Lucas and Micah team up to prevent a bank from being robbed.
Mark plays matchmaker to two young residents of the town.
A man threatens to hurt Mark if Lucas does not sell his property to him.
Micah's young deputy starts a gunfight.
Lucas follows a group of outlaws in order to recover stolen money.
Lucas is upset when his missing cattle turn up in his neighbor's herd.
Lucas steps in when an Argentine native is accused of murder.
Mark is put in extreme danger after being exposed to anthrax.
A crippled Confederate soldier arrives at Lucas' ranch at the same time that a northern General.
Outlaws are on the hunt for a retired gunfighter.
Lucas steps into help when a traveling photographer is accuesed of murder.
Lucas intervenes when a wedding celebration gets out of hand.
Lucas helps when a boy witnesses a man being killed.
When an Indian U.S. Marshal runs into trouble in North Fork, Lucas lends his help.
An ex-card dealer opens a boarding house.
Lucas is called as a witness in a murder trial.
An outlaw agrees to surrender on the term that his lover gets the reward money.
Lucas is indebted to an outlaw after he saves his life.
Micah is put in the line of danger when his enemy is bent on seeking revenge.
A marshal goes crooked and kills the wrong man in order to collect the reward money.
Lucas must hunt down a conviced killer when he escapes from prison.
Mark becomes friends with a criminal running from the law.
A young man is determined to get his education despite his uncle's objection.
When a rancher's son is injured, he refuses to get his son medical attention.
A feminist school teacher receives threats from an angry mob.
Lucas must defend his old enemy when a killer for hire comes after him.
An old man claims that he has the power to make it rain.
Lucas donates blood in order to help save a badly injured man.
Mark stumbles across a body and soon comes face-to-face with the murderer.
Mark is kidnapped by a group of renegades.
Lucas is named the heir to an outlaw's estate.
A young man places the blame on a banker for his son's death.
Young Billy Mathis is named the lead suspect when a man is shot in the back.
Outlaws convince a coward to fight with Lucas.
Daniel Malakie arrives in town in order to bail his three sons out of jail. When he learns that Ben, one of his sons, accidentially shot his brother Stump, Malakie heads out to find the man really responsible for Stump's death.
A dying man reeks havoc on North Fork.
A reporter mistakenly believes that his wife is having an affair with Lucas.
Lucas and Mark must lie to help protect a family.
Everyone is shocked by Eddie, the hotel clerk's, daughter when she is revealed to be a painted hussy.
After coming down with a strange illness, a couple stay with Lucas while they recover.
While in the desert, Lucas becomes injured and stranded.
A stage coach Lucas and Mike are on is held up by outlaws who take Mike hostage.
Outlaws take Micah hostage and threaten to kill him if their leader is not released.
A drunk believes that he is the heir to Lucas' estate.
Lucas and Mark watch over a baby for her mother.
Lucas helps an Easterner.
Mark tells Lucas about a plot to rob a bank, but Lucas does not believe him
Lucas gets into a gunfight with a buffalo hunter.
Brother threaten a woman's fiancee.
Detectives believe Mark is a boy they are looking for.
Two heirs threaten a widow.
A boy guns down an outlaw.
Lucas and Mark get caught up in a shady horse trade.
A killer goes after his parents.
Lucas protects a girl from her stepfather.
Lucas and Mark are held hostage on a train.
Mark believes the new preacher is an imposter.
Lucas helps a young man that deserted the military.
While sick, Mark has a vision of his mother.
Lucas' friend is believed to be a card cheat.
Lucas investigates when a rancher's daughter is murdered.
A convict goes after Lucas.
Siblings head out to kill the man that killed their father.
A man's mother believes she owns the ranch Lucas lives on.
A farmer risks a years worth of crops on a bet on a racehorse.
A former convict is accused of murder.
A federal agent goes undercover in a theft ring.
Lucas is inadvertently involved in a murder.
An ex-conman is a target for a hanging.
Robbers kidnap Mark in order to convince Lucas to help them with their plot.
A family matriarch wants revenge after her sons are killed.
Lucas is taken hostage after a jail break.
A con man and his son are after Lucas' mineral rights.
Lucas must go up against a town in order to retrieve a prisoner.
Lucas goes after a notorious bandit.
A minister gives a family a lesson in humility.
A store owner hires a group of convicts.
A widow puts up $100,000 reward for Lucas' death.
Mark and a school friend become trapped in a mine.
A conman finds his next victim: he tricks a sharpshooter.
An alcoholic painter is accused of murder.
A mute man steals from a stage coach.
An elderly lady, Miss Bertie, sets out to catch a bandit.
Lucas helps an alcoholic doctor regain his dignity.
Lucas believes a book salesman is a murderer.
Lucas and Micah have to relocate a prisoner, but have a hard time doing so.
A dying man's last request is for Lucas to bring him his wife.
Lucas must face the son of a man he killed during the war.
Lucas goes undercover as a federal agent to find a murderer.
Lucas goes undercover as a federal agent to find a murderer.
Micah must face an old enemy.
Micah, Lucas and Mark investigate a 20-year-old mystery.
After being rendered temporarily blind, Lucas must take part in a gunfight.
A POW takes Lucas prisoner for his work in the civil war.
A traveling salesman is accused of assault.
Lucas unknowingly buys stolen horses and faces hanging for doing so.
A man claims he killed a gunfighter.
After being wounded, Lucas heads out to bring robbers to justice.
Witnesses believe the area is cursed.
A stage coach is stranded at the McCain ranch during a snowstorm.
Lucas' name is submitted to a matchmaker.
A doctor is threatened to not help save a man.
Lucas goes up against a group of bandits.
Mark takes his first job.
Mark and Millie are taken hostage.
Lucas is subsituted for a condemned killer.
Mark believes the McCain's new neighbor is a deserter.
A man tries to bribe Lucas into being a witness.
A duel occurs over a chess match dispute.
Trauma from the war leads a man to believe he is Abe Lincoln.
A town tries to take a boy away from his grandfather's custody.
Mark Twain arrives in North Fork.
Townspeople head out to face a killer without Lucas' help.
A family blames Lucas for their son's death.
Lucas is forced to mortgage his farm when he needs money to pay a ransom on Mark.
Lucas is forced to help outlaws stage a prison break.
Two siblings stay with the McCains.
A gang arrives in town to free a man from prison.
A drifter goes after a deaf girl.
Lucas is challenged to a duel.
Mark develops a crush on Milly's young niece.
Lucas believes a dead man's brother is a bounty hunter.
Mark makes his father proud when he stands up to a young, rebellious gunman.
Lucas is accused of murder by a man who swears he saw Lucas murder a man.
Out of debt, Mark helps a prisoner break out of jail.
Lucas becomes a gambler.
A seemingly nice banjo player becomes friends with Mark, but the tide changes when he attacks Lucas.
An angry, jealous man attacks Lucas.
A woman claims to be Micah's long-lost mother.
Lucas must rethink his attitude when it comes to a former outlaw turned good.
A new marshal arrives in town, but the townspeople have doubts about him when they learn he is close friends with a known convict.
A gambler tries to woo the owner of the general store.
After suffering an injury that results in amnesia, Lucas believes he is an outlaw.
An ex-convict arrives at Lucas' ranch in order to find treasure he believes is hidden on the property.
Lucas, Micah and Mark are taken hostage by a gang of bandits.
Lucas is able to break free from the bandits that are holding him hostage just in time to deliver a baby.
The townsmen are in awe when a beautiful woman buys the hotel.
Lucas and a wanted outlaw are quarantined in a hotel together.
A retired gunfighter decides to settle down in North Fork.
An Irishman woos Lou.
Lucas must race to stop an assassination plot.
Mark becomes friends with a man from the circus.
Lucas is challenged by a boastful young man.
When the railroad informs Lucas that they will need to buy his property in order to put a line through, Lucas refuses to sell.
After an accident, Mark becomes afraid of Lucas' gun.
When a man becomes deputy for the day, his new found power goes to his head.
Following a conflict, Lucas loses his self-confidence.
An Indian is wanted for the murder at a mining camp.
A sign painter is accused of murder.
Mark is threatened by a young boy.
When a Japanese man arrives in North Fork to visit, he is hounded by townspeople.
Lucas is worried when he hears rumors that Mark may be running with a gang of bandits.
When a poisonous snake makes its way into the prison, a prisoner uses the opportunity to plan his escape.
Lucas' heads out to seek revenge, but his want to get even nearly costs him his life.
Lucas finds a bullet and presents it as evidence at a convict's hearing.
Mark is temporarily paralyzed following a devastating accident.
Lucas and Mark's new friend is a killer for hire.
When an old man running from the law asks Lucas for help, he is forced to turn him away.
Lucas' help is needed when a group of lawmen have difficulty capturing a gang of outlaws.
A recluse is the only one who can save Lucas and Mark when they get caught up in quicksand.