Movie version of the original TV series follows the show's format of multiple stories blended together. The lead story involves the ship's bookkeeper who becomes the driver by accident for a trio of jewel thieves. A suspended police lieutenant trails the group onto the boat in disguise. The ship's captain, reclusive since his wife's death, is pushed by his daughter to return to the hotel in Bermuda where the couple originally honeymooned. The new cruise director sets her eyes on a passenger who is a TV star, but another ship employee is interested in her. Doc has to care for the pregnant wife of the ship's chief executive.

Guest stars include Georgia Engel as a stowaway, Gary Frank and Melanie Mayron as a pair of tremulous honeymooners, Stella Stevens and Pat Harrington as an eternally bickering married couple, and Audra Lindley and Phil Silvers as, respectively, an outspoken middle-aged lady and a woebegone widower.