After stints in two prisons the Winslow's son Mark becomes a trouble shooter for the Union Pacific Railroad bringing law and order to towns along the line.

Laurie Winslow, working with Buffalo Bill's Wild West Show in order to earn money for college, runs into old friend Cody Rogers and manages to land him a job as a trick roper with the troupe, but as the two young people's feelings for one another grow, so does the fear that Cody's troubled past is about to catch up with him.