When a person of his pals, a Latin American writer, has been murdered, Specialist killer Holland is forced to break a Central American government torture ring. The murderer, Doctor Clement Molloch, is the master sadist supporting the governmental torture of innocent victims. Holland lures Molloch out of the fortress-like headquarters by using his friend's wife and daughter. A doctor is directed on a wild chase that takes him into a opal mine at which he finally comes face to face with Holland, when Molloch's sister is kidnapped by Holland.