Holly Golightly is an eccentric New York City playgirl determined to marry a Brazilian millionaire. But when young writer Paul Varjak moves into her apartment building, her past threatens to get in their way.

Alan Mitchell returns to New York to work for his father Walter, the owner of a fashion house that designs and manufactures dresses. To stay non-union, Walter has hired Artie Ravidge, a hood who uses strong-arm tactics to keep the employees in line.

In this musical-comedy, Dean Martin plays an American hotel mogul who becomes smitten with a young Italian woman (Anna Maria Alberghetti) when buying a hotel in Rome. To marry this gal, he has to get her three older sisters married off.