Sierra Jim, wounded and desperate, flees from the sheriff and is given refuge in the cabin of a young girl, the sweetheart of the Pony Express rider. Jim thus escapes his pursuers and later plans the holdup of the Pony Express rider, which succeeds. Jim is about to distribute the spoils of his deed when he sees the photo of the express rider's sweetheart, which he recognizes as that of the girl who had saved him. He forces his pals to give up their share of the loot, returns it to the express rider, and begs for the photo of the girl; taking it, he rides away across the hills to a new and better life.