Performing: Groucho Marx, Chico Marx, Harpo Marx, Kitty Carlisle, Allan Jones, Walter Woolf King, Sig Ruman, Margaret Dumont, Jonathan Hale, Rolfe Sedan, Billy Gilbert, King Baggot, Bess Flowers, William H. O'Brien, Chuck Hamilton, Gino Corrado, Al Bridge, Jack Chefe, Gwen Lee, Leo White, Frank Yaconelli, Harry Tyler, Wilbur Mack, Stanley Blystone, Hal Price, Selmer Jackson, Purnell Pratt, Edward Keane, Edmund Mortimer, Russ Powell, Sidney D'Albrook, Otto Fries, George Irving, Jay Eaton, Adolph Faylauer, Ellinor Vanderveer, Julia Griffith, Robert Emmett O'Connor, Charles McAvoy, Frank Mclure, Eddie Hart
A sly business manager and the wacky friends of two opera singers in Italy help them achieve success in America while humiliating their stuffy and snobbish enemies.