Jeff Scott is sent to investigate problems with wagon trains attempting to make the journey to Oregon. Sam Morgan has sent his henchmen, under lead-henchman Bull Bragg, to stop the wagon trains in order to maintain control of the fur trade in the area.

Judith Endicott, the daughter of a wealthy eastern banker, vamps Philip Randolph, an Arizonan, when he comes east to talk business with her father. Philip proposes and discovers that Judith has only been kidding him along. He returns angrily to Arizona, and the elder Endicott, accompanied by his daughter, follows him west. With her father's permission, Richard "kidnaps" Judith and takes her to a deserted Indian cliff dwelling, where she must cook and care for him. Bert Durland, Judith's fiancé, follows after her, and his Indian guide steals all of the horses. Judith and Bert and Philip start back to civilization across the desert, and Bert goes berserk from the heat. They are rescued by cowboys, and Judith returns east, "kidnaping" Philip and taking him with her.

Real life rodeo champion Hoot Gibson plays Dan Molloy, an expert rider who wins the big one, the Calgary Stampede. When the father of his new French-Canadian girlfriend turns up dead, Molloy is the only suspect!

A red-blooded romance of a millionaire cowboy and a city girl with stirring chase after a racing express that'll hold you spellbound.