Scout Seamus Donegan is not under the command of Col. Nelson A. Miles, who must lead his war-weary troops up the Tongue River into butte country. There, amidst the snow-covered bluffs, awaits Crazy Horse with a thousand-strong force of Lakota braves. They are ready to engage Col. Miles and the Fifth U.S. Infantry, in the last battle Crazy Horse will ever fight against the white man`s army.