The protégé of a famous cat burglar reluctantly agrees to join forces with a lesser criminal in the daring heist of several famous jewels from a seemingly impenetrable vault.

Mike Hilton served eight years in prison for being innocent. When he is released from prison early, he wants revenge on the men who were responsible. But the ex-commissioner in charge at the time, Jack Bellamy, has given in to drunkenness. And Mike's lawyer Cunningham continues to make crooked deals. He holds the key to solving the case. When Bellamy picks himself up again, he and Hilton are able to bring Cunningham and the gangster Whity to justice.

In Hamburg's red light district Jule and his mob of macks battle Holleck's competing Viennese clan. When a sex worker is murdered both kingpins join forces to hunt the killer and keep the police from cracking down on their business.