Sergeant David Callahan leads a task force of U.S. Marines on a failed mission. Five years later, working as an adviser to Thai Special Forces, he is forced to return to the Vietnamese P.O.W. camp he escaped years before, to fight a deadly duel.

For America, the Vietnam War is over. Johnny doesn't see it that way. This Special Forces soldier battles vicious Vietcong, a sadistic Russian advisor and his own peacenik girlfriend as he embarks on a deadly mission behind enemy lines.