Hepburn plays a Philadelphia socialite who has just divorced Grant and is looking for a new husband. Seeking to prevent an unfortunate wedding, Grant appears with Stewart who falls for Hepburn and keeps up with her biting wit and humor.
Groucho stars as a vet accidentally put in charge of a sanitarium. He meets Harpo the jockey and Chico the tipster, a crazy pair from the race track, and "Marxmania" breaks loose.
New York City's famed Waldorf-Astoria hotel provides the lavish backdrop of the various characters and their stories presented in this up-to-date version of the 1932 film classic "Grand Hotel."