Top billing in this vintage Republic release goes to The Arizona Cowboy himself, Rex Allen, and his faithful steed Koko, "The Miracle Horse of the Movies." Allen plays a Texas Ranger who accompanies his buddy Slim Pickens home to Colorado, where Slim has come to claim a large inheritance. However, the sinister brother and sister team of Carrie and Dan Hurley (June Vincent & Fred Graham) are conniving to cheat Slim out of his money and keep it for themselves. Will the Hurley's succeed in their dastardly plan? Not when you've got a friend like Rex Allen.