The Earp brothers, including Wyatt (Henry Fonda), are moving cattle close to Tombstone when one of them, James, is killed. Wanting answers, Wyatt becomes the town marshal and with his brothers Morgan (Ward Bond) and Virgil (Tim Holt), focuses on the Clanton family headed by Walter Brennan. He develops a connection with Doc Holliday (Victor Mature), who's often unstable and drinks heavily, but the main event remains t…