Riding, shooting and singing...Gene Autry plays in a dual role chasing bad guys that his dad Marshal Steve Autry(Autry)jailed over twenty years earlier. Wonder horse Champion is stolen and Gene has tracked the culprits to a ghost town where school teacher Ruth Lambert(Nan Leslie)believes to have talked to the ghost of an old prospector(Clem Bevans). Gene finds Champion and the horse gets his revenge by trampling a villain. Gene finds time to romance Ruth and gets to sing the popular "You're The Only Star In My Blue Heaven" as well as the title song "Rim Of The Canyon". It is easy to see that Columbia Pictures has a larger budget than Republic. Also in the cast: Thurston Hall, Jock Mahoney and Alan Hale Jr.