Cal Dempster, a local bad man of the Niobrarra River country, quarrels with a ranch owner over the sheriff's daughter, and getting the worst of the argument, proceeds to instigate a raid on the ranch owners and drives off their horses. He is assisted by a band of outlaw Sioux. Indians, herds of range stock and a general air of Selig, makes this the kind of picture that keeps your patrons coming.
—Moving Picture World synopsis