Hide your daughters! Mack the Knife is back! Set in the underbelly of London, ruled by criminals and corrupt police, populated by beggars, and entertained by prostitutes, The Threepenny Opera tells the story of the sly and debonair Macheath, his den of thieves, and his many women. Considered revolutionary in its 1928 premiere, Brecht and Weill's master work set the standard for a new kind of theatre with its innovative blend of operatic presentation and bawdy German cabaret.