After twenty-five years of operating in New York, American private investigator Scotty has started a little agency in Amsterdam, United Detectives. One day Scotty hears from his girlfriend Bonnie's car phone that a posh woman is in his office with an assignment. It turns out to be Laura Binger who hasn't seen her husband, the war photographer Max, in two months and would like Scotty to deliver him back home. But Max has his hands full photographing Rebecca, a beautiful woman with connections to the underworld. Scotty, with his assistant Tom, goes to investigate in the Amsterdam penury, where a battle for power is just underway between gangster boss Mr. Johnny and his cronies and another gang of drug dealers.