When a boy is captured by a Native American tribe after his family is massacred, he finds solace in befriending a wild colt. Years later, following his escape, he is recaptured by a tribe who force him to battle their vicious devil horse. Yet, the horse looks familiar. Is this mysterious devil horse and the wild colt he knew years earlier one and the same? Produced by Hal Roach, who wrote the script with an assist from Stan Laurel, this little treasure was the fourth of 15 features to star Rex the Wonder Horse!