John Rambo is released from prison by the government for a top-secret covert mission to the last place on Earth he’d want to return – the jungles of Vietnam.

Lyon Gaultier is a deserter in the Foreign Legion arriving in the USA entirely hard up. He finds his brother between life and death and his sister-in-law without the money needed to heal her husband and to maintain her child. To earn the money needed, Gaultier decides to take part in some very dangerous clandestine fights.