- Theo Denison Jr buys a cruise with his own money and doesn't tell his parents. Sharon can't release the pain of her son's death. Julie's protégé Connie is after Julie's job. Maisie and Durwood are a married couple traveling as singles.
- A young boy (James Bond III) pays for the cruise with his paper route money and neglects to tell his parents (J. Jay Saunders and Marilyn Coleman), at home, that he bought the ticket and is on board. A wife (Sandy Duncan) cannot release the pain of her eight-year-old son's death and takes the boy under her wing. Julie (Lauren Tewes) is training a pretty, vivacious cruise-director trainee (Jo Ann Harris), who will stop at nothing to get Julie's job. Who can and will stop her? Bickering marrieds (Steve Allen and Polly Bergen) pose as swinging singles, with each matching up with fellow passengers (Loni Anderson and Joshua Bryant).—lemoviecritic
- THE UNDERSTUDY - Connie Evans is a cruise director trainee, but the crew soon learns that she intends to discredit Julie, get her fired, and steal her job. MARRIED SINGLES - Durwood Moss and Maisie Nolan are a married couple who try to take separate vacations on the same cruise in order to spice up their marriage. This proves difficult since they're assigned to adjacent cabins. Durwood meets up with luscious young blond bombshell Barbie, while Maisie makes time with overzealous insurance salesman Jack Plymouth. LOST AND FOUND - Richard and Sharon Baker are grieving over the death of their son several months earlier, when they befriend Theodore Dennison Junior, a young boy who is traveling on his own and may be an orphan.
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