 Two gun runners, Le Doc and Rougier, save and tend the only survivor of a plane crash into the Vietnamese jungle. When they realize the man named Hamelin is a renowned electronics engineer, they decide to keep him hostage and to release him in exchange for a high ransom. Things get complicated with the coming of Sylvie, Hamelin s wife in search of her missing husband. To make matters worse, Wong,a Chinese gang leader and former ally of the traffickers, turns against them and attacks them with his men...