A group of gunrunners is wanted by both the Mexican Federales and the Yaqui Indians for different reasons - the federal police want to stop the marauding tribes from harming innocent farmers, and the Indians want revenge because the leader of the gunrunners sold them faulty medicine that caused many of their children to go blind. The police capture the criminals, but both sides are trapped in a ruined mission by an angry group of Indians. Will the police and criminals be able to cooperate in order to survive the attack of the tribesmen?