When Custer and Crazy Horse are both captured by Blackfeet who are hostile to both whites and the Sioux, the two enemies must work together in order to escape and stay alive.

Lt. Moreno is a Kiowa in the cavalry who his men suspect him of being a spy. The men of command presume that Moreno is trying to thwart the efforts of making the Arapaho an Allie to the cavalry.

Custer enlists the aid of some Kiowas to help him discover the parties responsible for a series of wagon train raids.

Custer goes in pursuit of a scout who escaped from Army custody after being convicted of theft and killed a trooper while making his bid for freedom.