George Griffin enters East Germany for a bet but gets badly beaten up. He quits the army but Major Drew asks him to go to Hamburg to exchange some documents. The businessman is later shot dead. The assassin is the East German who beat up.

Griffin learns he was carrying diamonds for Drew. After smuggling a woman over the East German border he becomes freelance but upsets the CIA. They offer him a new start if he brings the assassin Tauber to them but after a fight kills him.

Griffin brings Tauber's body to Nancy's farm. The CIA want him in good health but Griffin realises Dalton is a phony. Tauber works for Dalton while his boss Tom Bradley is trying to kill him. With his hideout discovered, who can he trust?