
Two Pinkerton agents arrest Jack, claiming that he is really John McCarty, a member of the James Gang, who murdered a Pinkerton agent ten years earlier. Jack's cell door is mysteriously opened during the night, and when one of the agents is gunned down on the street, Jack becomes the prime suspect in that killing as well.
A branch of the pony express is scheduled to run through Bordertown, promising employment for the town's young men, including Bruno Danzinger, but the route will carry the riders through Indian burial grounds. Angered that their sacred burial grounds have been disturbed, the Indians threaten war if the route is not changed.