Oregon Trail Scouts

Red Ryder battles an unscrupulous fur thief named Hunter for the right to trap beaver and otter on the land of Chief Running Fox. Hunter attempts to ambush Ryder and his pal "Bear Trap" and when this fails, he kidnaps Little Beaver, grandson of the Chief, and kills the Judge, with whom the boy had been staying. But the boy manages to escape. The Duchess, Ryder's aunt, turns up and tries to persuade Ryder to return east with her.