Thunder Cloud, a member of the Sioux Nation and a college graduate, goes into hiding, believing he has slain a villainous white man named Bill Mosher. Although he steals to survive, Thunder Cloud always leaves money or a promissory note for what he takes. The young Sioux falls in love with Starlight, the half-breed daughter of Sheriff La Verne, and abducts her during an Indian Fair. They are followed to his hideout by Little Antelope, the adopted son of white parents who is now a member of the Indian Police. Thunder Cloud recognizes Little Antelope as his younger brother, but is unable to avoid arrest. At the trial, it is revealed that Mosher is alive and was attempting to frame Thunder Cloud. After he is set free, Starlight quits her teaching job to marry him.