After a gang of violent outlaws forces a Native American woman to lead them through a treacherous forest in search of a fortune in gold, they unknowingly awaken an ancient, bloodthirsty beast that will stop at nothing to annihilate them all.

Follows the narratives of the U.S. Seventh Cavalry and Native American warriors through the Battle of the Little Big Horn from June 25th through June 27th, 1876.