Rocco – also called the man with two faces – is visited by Pinkerton, who wants him to investigate the disappearance, and possible kidnapping, of some soldiers. Rocco declines, as he has a good life teaching women self-defence. When Pinkerton is assassinated, Rocco changes his mind and goes to Snake Valley disguised as a doctor. He uses narcotic gas to loosen the tongues, and gets help from a sidekick and two women at the saloon. He is disclosed and heavily beaten, but eventually frees the hostages, while the responsible big boss gets killed.