Leather-tough Army Scout Jim Beatty reins up short to the basin's rim. Below, the notorious Apache leader, Cholo, and his braves are about to massacre an army escort to the wife of Colonel Wills. In a half-crazy act of raw gumption, Beatty plunges into the battle and turns back the attack - but not before the Indians capture Ruby, Mrs. Wills's half-breed maidservant.
Under direct orders from the colonel, Beatty teams with a bluebelly as hostile and deadly as the burning Sierra Madre itself to fide south of the border and rescue Ruby. Rindin' into a hail of hot lead, the partners survive Mexican outlaws and the blistering heat of the desert to face their savage enemy. Their big bore guns spitting death all around, Beatty swears to do his duty and send them Apaches straight to hell - or die trying!