On orders from Territorial Governor Gosper Wyatt Earp heads south to make peace when he learns that Old Man Clanton has sent his men into Mexico to rob the silver trains and steal the cattle of wealthy Mexican rancher Don Sebastian.

During a robbery Doc Goodfellow is shot accidentally by the Hewitt gang. Doc Holliday says a real surgeon is needed to remove the bullet. The closest one is Dr. Mason who is now a prospector. Earp finds Mason is suffering from gold fever.

Morgan Earp has been helping Wyatt for a month but Morgan's interest in drinking, women and hanging with Doc Holliday bother Wyatt. Wyatt decides Morgan marrying a nice girl like Lucy Tedder would help until he learns more about her.

A man is found murdered in a stable but the weapon used is unique. The man was killed by shooting an air bubble into an artery in his neck. The primary suspect appears to be the fiancée of the dead man's daughter who was very popular.

Morgan Earp has been having a streak of good luck in Tombstone's gambling houses causing him to break with his fiancée Ruthie and have grand ideas. Wyatt wants to get him to quit while he's still ahead and return to his old self.

Marshal Wyatt Earp faced the hatred and gunfire of many men in the towns of Wichita, Dodge City and Tombstone . . . but none hated him more than did the Ten Percent Ring. They could neither buy him nor drive him out of Arizona by force . . .

A young man just released from prison is determined to go straight. However, his efforts are being sabotaged by his girlfriend's brother, a no-account gambler who has massive gambling debts to a man who wants to collect.

Johnny Ringo and Curly Bill Brocius, outraged over crooked Sheriff Behan taxing the money they make on some of their illegal activities, enlist Doc Holliday to frame the Sheriff --- but Earp is suspicious the case seems a little too pat.

On the road to Tucson Earp finds a baby near a family killed by the Apaches. The Sheriff of Pima County refuses to take the baby so Earp is left to find someone to adopt it. He finds an unlikely couple but they are not married.

Tom McLowery's wife doesn't like ranch life so the couple decides to move to Tombstone against the wishes of Frank. Old Man Clanton decides to let them take over the OK Corral causing rancor with Curly Brocius and putting Earp on alert.

Wyatt's deputy, Shotgun Gibbs, runs off a saddle bum who was hassling a pretty young widow who had hired him to help her go to Colorado. Her two kids immediately take a liking to Gibbs while Wyatt and Doc wonder if Gibbs needs a change.

Marshal Wyatt Earp faced the hatred and gunfire of many men in the towns of Wichita, Dodge City and Tombstone . . . but none hated him more than did the Ten Percent Ring. They could neither buy him nor drive him out of Arizona by force . . .

The long struggle for law and order in Arizona, which exploded in thirty seconds of deadly gunfire at the O.K. Corral, placed Wyatt Earp among the great Marshals of the Western Frontier. But that famous gunfight has been a matter of controversy ever since 1881. Witnesses from the outlaw element contradicted one another on so many vital points that no reputable historian has taken their version seriously. Marshal Wyatt Earp's story of the fight was told under oath and transcribed verbatim. This is Wyatt's testimony of what happened that bloody day in Tombstone . . .

The gunfight at the O.K. Corral is over---and Wyatt is charged with murder. Wyatt: Hugh O'Brian. Doc: Douglas Fowley. Clum: Stacy Harris. Judge: James Seay. Morgan: Dirk London. Virgil: John Anderson. Ringo: Norm Alden. Curly: William Phipps.