In another of his classic Westerns, John Ford again reflects upon the advance of civilization on the receding frontier, recounting the events leading up to and including the legendary gunfight at the O.K. Corral. As they drive their cattle toward California, Wyatt Earp (Henry Fonda) and his brothers, Morgan (Ward Bond), Virgil (Tim Holt), and young James (Don Garner), stop outside Tombstone, Arizona, where they refuse an offer for their stock made by Old Man Clanton (Walter Brennan) and his son, Ike (Grant Withers). The three older brothers ride into town, and, after Wyatt subdues a drunk, return to the wagons to find James dead and their cattle stolen. With little doubt about who the perpetrators are, Wyatt decides to accept the offer to be marshal of Tombstone that he had just recently refused. Despite Wyatt's tense first encounter with melancholy gambler and gunslinger Doc Holliday (Victor Mature), a wary, tacit friendship grows between the two men, which is soon complicated by the arrival of Doc's former love, the demure Clementine Carter (Cathy Downs).