A New York scandal, a riot on a ship, and an evening of insanity in a concert hall are some of the problems resulting from Groucho's outrageous business schemes. The goal, to bring Milan's finest opera stars to Manhattan.

Jules, a young mail courier, is an impassioned fan of Cynthia Hawkins, a legendary, and determinedly unrecorded opera star. He smuggles a tape recorder into a performance and tapes her singing. At the same time, a prostitute hides a tape recording that details the career of a French mobster in Jules' delivery bag. Dizzying chases and bizaare plot twists follow, as Jules is pursued through Paris, aided by his two eccentric friends, Gorodish and his...