Wow! Can you say disturbing!?!
I can't believe this gutter level exploration of Vietnam came out in 1976. Actually, I can.
Disgusting memories of a massacre where many innocents died during the Vietnam war torture the mind of a man to an unhealthy extreme. One night, after flipping out from the disturbing flashbacks of the massacre, he decides to put an end to all his mental anguish once and for all by leaving his wife and home behind to pursue a quest to kill his old NAM buddies he deems guilty of the atrocity, and thus must die in the name of justice.