One of Bronco's best friends is killed in a train wreck. Bronco looks into it, and discovers that the "accident" was in fact not an accident at all; the train was deliberately sabotaged.
When Bronco comes back to his home town after having fought for the Confederacy in the Civil War, he finds that not only do many people in town consider him a traitor, but they also think he's a murderer who killed the brother of his fiancé.
Bronco comes to the aid of a group of nuns who have a cattle ranch, and whose presence is about to touch off a range war by neighboring cattlemen who don't want them there.
A writer hires Bronco to take her to a ghost town, but after several attempts are made to kill them, he discovers what she's really after: the body of a man buried in a nearby glacier.