Fueled by his feelings for a pretty World War II-era nurse (Kathryn Grant), the mischievous Pvt. Hogan (Jack Lemmon) plots to throw a "mad ball" for love-starved nurses and soldiers at a ramshackle inn in the French countryside. Trouble is, there's a self-important captain (Ernie Kovacs) who's been watching his every move, which makes hosting a secret soiree all the more challenging. Dick York of "Bewitched" co-stars as Hogan's partner in crime.