Rex the Wonder Horse may stomp adult riders to paste, but he lets young Billy Williams ride him to take on the shadowy Legion gang and their evil leader, "the Voice." As the baddies try to sabotage an oil operation and frame the youth's pop, he and his trusty steed battle to save the day. With Harry Carey, Frankie Darro, Joe Bonomo. 12 episodes; 3 3/4 hrs. total. Standard; Soundtrack: English.