Former convict George Contant travels to a California ranch, seeking a fresh start with his brother, John Sontag. But George is surprised to find John and the ranch owner, Chris Evans, making plans to rob the Southern Pacific Railroad. Despite his misgivings, George agrees to help his brother, but the train robbery yields a disappointing amount of loot. When U.S. marshals arrive at the ranch to arrest the gang, a desperate firefight breaks out, resulting in the death of a lawman. The gang escapes into the mountains sparking one of the largest manhunts in California history. After taking shelter behind the crumbling walls of Stone Corral, they make their final stand against a hail of gunfire. Years later, a reformed George Contant tracks down gunfighter-turned-reporter Bat Masterson to tell his side of the story.