Yuzo Kayama is an American-Japanese operative working for the US to uncover an arms deal between an American seller and Chinese communists, and to take out both parties. After almost getting assassinated himself, he takes a wounded civilian with him despite living in a world where no one can be trusted.

A gunslinger is hired to kill a news photographer. The young ward of the shot photographer discovers the set-up behind the killing - that a laboratory is being set up by a Nazi organization to capture and train talented youth and that the photographer was about to expose it.