A team of ex-con bounty hunters go to Germany in search of Hitler. If they can find him, a million dollar reward is to be paid to them.

In Puerto Rico to investigate a glut of contraband diamonds that are flooding the world's jewel market, Mr. Moto and his sidekick, a wrestler, find themselves involved in murders by thrown daggers, the frame-up of an overstressed Army colonel, and a pirate gang led by an unknown boss who has inside knowledge of the ensuing investigation.

While on trial for her life, a young woman recalls her tough upbringing and her involvement with the men who brought her to this current state of affairs.