Sherlock Holmes and Dr. Watson embark on a search for Cleopatra's ancient necklace, which has been stolen.
The Gangster Macheath secretly marries the daughter of beggar king Peachum. When Peachum finds out, he instructs the police chief Brown to arrest and hang Macheath. If not, all the beggars of Soho will disturb the upcoming coronation.
Pavel is sent to Germany to spy.
