Tiny Tucker delivers mail and attracted to her, Just Baggot becomes her new carrier. When he kills a man in a gunfight, the man's son joins him in the deliveries and they become good friends. But Baggot has two problems, alcohol and the urging of his friend Signor to rob the mail shipments. When the boy learns Baggot killed his father and leaves him, Baggot decides to join Signor in a train robbery. When other outlaws beat them to it, they have a chance to become heroes.