In this light-hearted wartime comedy, three World War II Navy men orchestrate a 4-day leave for themselves in San Francisco. Once ashore, they immediately set out to make it a swinging celebration - to last as long as possible! Chief among the party-bound is Commander Andy Crewson (Cary Grant). Desperate to keep the men on the straight and narrow, Lieutenant Walter Wallace (Werner Klemperer) commits the trio to becoming spokesman at a local shipyard that's owned by a local tycoon. But before long, the rowdy Crewson is courting the shipmaker's voluptuous daughter (Jayne Mansfield) with hilarious results.

This hilarious romantic comedy follows a crew of Naval servicemen who have just landed in San Francisco. While their commander (Cary Grant) struggles to contain his men, they continue to seek out fun and love in every corner of the San Francisco streets.