A travelling show arrives in town, claiming to have guns from famous gunslingers. Of particular interest to young Jeff Sonnett is a gun that supposedly belonged to his infamous father, James. Never having known his father, Jeff convinces his grandfather, Will, to help him find his father, no matter how long it takes. The first stop is a small town where the Sonnetts find a man who lost an arm in a gunfight with James Sonnett and is looking for revenge on anyone with the name Sonnett.

An up and coming gunslinger who puts a small bell on his belt for each person he's killed wants to add the Sonnett name to his reputation.

Will and Jeff find a grave marked for James Sonnett in a small Mexican town. James had been protecting the town from bandits,a job that his son and father decide to finish. In the end, it turns out that the grave was only a ruse to throw the bandits off the trail of a wounded James Sonnett, so the search continues.

Will and Jeff sign on as deputies in order to come to the aid of a wounded sheriff.

Will and Jeff go to Wyoming to see whether a man scheduled to hang is really Jim Sonnett.

When Will and Jeff realize Jim is only a day's ride away, they send an urgent wire to convince him to wait for them.

Jeff is wounded in a gunfight and taken in by a family who share a dark secret: one of their sons was killed by James Sonnett. After framing Will for theft, the Father plans to kill Jeff as soon as he can hold a gun. The distraught Mother has other ideas, wanting to keep Jeff as her own son.

A bounty hunter takes Jeff and Will prisoner to lure Jim Sonnett to Devil's Fork.

When Will and Jeff land in jail, a beautiful woman puts up the bail and asks them to stay in town.

Will and Jeff stumble upon a wounded man in a ghost town saloon.

A sheriff rounds up a possee to hunt down Jim Sonnett after a dying bank robber wrongly names the gunslinger as his accomplice.

Jeff wins a prize bull in a shooting contest.

Will and Jeff encounter a woman who claims to be Jeff's mother.

When two vengeful brothers take Jeff hostage, Will convinces an old friend to impersonate Jim Sonnett.

Will helps an old friend convince townspeople to finance and build a house of worship.

The Sonnets visit a ranch looking for information about Jim, but they uncover a murder instead.

After two bank robbers wound Will, Jeff pursues them into Apache country.

Will and Jeff encounter a man who claims to be Will Sonnett.

Will and Jeff race to Waco, where Jim Sonnett stands trial for murder.

Will and Jeff unwittingly stumble upon an outlaw's mountain cabin.

Will pleads Jeff's case after a lynch mob accuses the boy of murdering a storekeeper.

A woman working in a saloon needs the Sonnetts' help when her father decides to come for a visit.

Will arranges to meet Jeff in a ghost town saloon, but he ends up getting caught in a hail of rifle bullets instead.

Jeff starts to fall for a young woman who claims that James Sonnett is the father of her infant son.

Will goes undercover for the Cavalry to help stop a gunrunner from selling rifles that may start a new Indian war.

Will & Jeff help an old friend pretend to be a rich rancher in order to impress his mail order bride.

A young man rides into town and claims to be Jim Sonnett's long-lost son.

Will and Jeff are arrested on trumpted up charges and forced to work on a chain gang, blasting a tunnel through a mountain for the railroad. Once there, the two find that any traveller passing through town has been bushwhacked and forced to work until they drop dead while the Sheriff and the Judge pocket the proceeds.

The father of a little girl killed by a stray bullet during a gunfight with James Sonnett tries to exact revenge on Will and James' old friend Buck Cobb. The father goads Will into a gunfight by burning Buck's homestead to the ground.

A peaceable small town begins to experience an unusual amount of fighting.

Will and Jeff find a straw effigy of James Sonnett hanging in a town. A young widow has accused James of killing and robbing her husband but when Will does some digging, the real facts come to light.

Will & Jeff run into a couple of crooked lawmen who claim to have run Jim Sonnett out of town.

Will and Jeff try to help a man recently released from prison to get a new start with his wife and child. Unfortunately, others in the town aren't as willing to give the young man another chance, including an old friend of Will's from the Army.

Will and Jeff become unwittingly entangled in a senseless blood feud.

In a small Mexican border settlement, Will and Jeff encounter a bounty hunter gunning for Jim.

Jeff admires a seemingly fearless stranger with a dark secret.

An accused man claims that James Sonnett's testimony can clear his name.

While Jeff lies sick with a fever in a hotel room, Will is forced into jury duty. A Swedish farmer is accused of murdering the son of a wealthy rancher but refuses to testify in his own defense. Will suspects that the case isn't as open and shut as it seems.

Will and Jeff disprove the premise of a play in which Jim Sonnett is killed. Will: Walter Brennan. Jeff: Dack Rambo. Morris: Jay Novello. Laurie: Joan Van Ark. Sheriff Devon: Robert F. Simon. Charlie: John Crawford.

After two long years of searching, Will and Jeff finally catch up to Jim Sonnett. Will convinces James that it's time to stop running, so the three take jobs as lawmen in a small town. Trouble doesn't take long to find the Sonnetts - a group of men paid to kill James ride into town only to find that James isn't the only fast gun in the family.