Robert Smith is an outstanding doctor, devoted to teaching at a local university in Mexico City. During a trip to Vietnam he suffers a violent assault at the hands of a group of terrorists while he was being intimated with a local girl. After his arrival he discovers that he has contracted an incurable disease; traumatized by the attack and his illness, he will begin a downward spiral into madness; becoming a cold blooded serial killer convinced that each new victim represents another chance for redemption.