 When someone gets killed during a bank robbery by Deans, half-breed Billy Two Hats (Gregory Peck and Desi Arnaz, Jr.) and their partner, the robbers flee. Sheriff Gifford (Jack Warden) tracks the robbers, killing one of them and capturing Billy. Deans escapes, but during a successful plot to free Billy from the Sheriff, Deans is shot, leaving him unable to walk or ride a horse. Billy, not wanting to abandon his friend, builds an Indian cot to drag Deans behind the horse. With the Sheriff hot on their trail, Deans and Billy try to stay one step ahead of the many obstacles which threaten their lives and freedom.