Capt. James Stewart pursues the bandit "The Kinkajou" over the Mexican border and falls in love with Rita. He suspects, that her brother is the bandit.

The railroad wants to extend a line across the Briggs' ranch, and hires a gang to get rid of John Briggs and his daughter, Nan sweetheart of the local sheriff. Wanderers "Sidewinder" Steve and his young friend "Red" Hepner take a hand in the proceedings and manage to save Briggs and his daughter, the ranch, and the romance.