The film casts Danny Kaye as a neurotic American ventriloquist performing in Europe. In a parody of the 1946 thriller Dead of Night, Kaye is unable to control the words coming out of his dummy, resulting in a near-nervous breakdown. His manager and best friend (David Burns) orders him to see a famous psychiatrist in Zurich. What follows is a zany adventure involving secret weapons, international spies and the beautiful Mai Zetterling. This classic Danny Kaye comedy was written, produced and directed by the great team of Norman Panama and Melvin Frank (The Court Jester).