 In yet another version of probably Republics most-used single plot---the basis for "The Leathernecks Have Landed"-"Rough Riders Round-Up", "Guns in the Dark", "Remember Pearl Harbor" and a couple of other films from Republic---and with revisions to fit the Autry mold, Gene Autry(Gene Autry) and his pals Dusty Moran (Bob Steele) and Pokie (Sterling Holloway) are in Mexico where Dusty is killed. With the help of Elena Del Rio (Adele Mara), whose father has also been murdered by unknown assailants, Gene discovers that the killings tie in with a jewel-smuggling scheme.