Sheriff Abbott suspects Ed Wells, a close friend of Trampas, of robbery and murder. Fringe from a buckskin shirt may be from a shirt owned by Ed. When Ed and his wife Connie cannot produce the shirt, Ed is arrested. Connie had given the shirt to her brother Willy Packer who has a troubled past. Trampas learns their suspicions but they refuse to tell Abbott hoping to keep Willy out of trouble. They know traveling salesman Gabe Stiles can clear Ed but after he is found dead, Ed and Connie admit that it was her brother Willy who was probably involved but Willy skips town. With Sheriff Abbott going after Willy, Trampas decides to join him along with telegraph operator Case. Abbott is hurt when his horse is kicked by Case forcing him to return to Medicine Bow. He deputizes Trampas and Case so they can continue. Willy is forced to buy a replacement horse from two prospectors who cheat him by selling him fake food. Willy is then forced to invade a couple's home for food and takes the wife to...