In the Arizona territory,Army Captain Jeff Packard (James Ellison) is on the trail of Apache Chief Geronimo (Chief Thundercloud) and the white renegades who is selling rifles to the tribe. Posing as an outlaw, he joins the gang of robbers and gun-runners and after a few hair-raising escapes, he brings about the downfall of the renegades, the defeat of the warring Indians, with the aid of the U. S. Cavalry, and the death of Geronimo. But not before a army outpost regiment is wiped out.