Mysterious outlaws are raiding the farm of Jim Barton and his daughter Judy, when Rancher's Protective Association man Steve Roper shows up to take a hand. Barton and other small ranchers under attack suspect Cal Matson and his son Reb as being behind the raids to run them off their land. Steve, in his guise of The Durango Kid, with the aid of his pal Smiley, learns that there is a third party behind the land-grabbing scheme.