Four men who served together in Korea hold their reunion on the ship. Gopher convinces Julie to pose as his girlfriend to impress his abrasive fraternity brother. A single mother-to-be finds romance with a fellow passenger, but fears that he won't react well to the news of her pregnancy.

The promoter of a marriage cruise is trying to reconcile with his own wife. Doc tricks Gopher into being a contestant judge but then discovers the other two judges are attractive women who vie for Gopher's attention. Another couple has a reputation for being perpetually engaged. Julie's old friend Mark is supposed to be the best man in the mass wedding, but the groom runs off with an ex-girlfriend. A groom's father and bride's mother attempt to talk their children out of marrying, only to fall in love themselves.

Vicki tries to play matchmaker for Capt. Stubing and Emily, whose husband still plans on winning her back. Gopher lands in a Curacao jail after Doc sends him on a wild goose chase so that he can get cozy with the marriage-a-thon judges. Carl and Mary Ann decide that they were wrong to interfere with their kids' wedding plans; Mary considers calling it quits with Tom. Emily accuses Marv of treachery after her fiancé suddenly reappears in Curacao and denies that he planned to leave her.

Julie teaches a Japanese wife some western lessons about keeping her man. A wealthy Arab thinks that a young man's girlfriend is one of his presents. Gopher loses his job when a cheerleader, an object of another man's affection, only has eyes for Gopher. A man who jilted his bride-to-be shares the honeymoon with his best man.

Famed author Brian Mallory gives three people free tickets to a Caribbean cruise. He then presents each of them--and Gopher--with gold coins. He explains that they are among the last people to have spent time with his nephew; and offers them $100,000 if they can track down the young man, who is believed to be on one of the islands the ship will be visiting. One of the passengers taking part in the quest is about to donate a kidney to his brother. A young woman follows him around and seems to take a special interest in everything he does. Mallory's wife finally grows tired of his aloof and cruel behavior toward her. She leaves him, and seeks comfort with Doc. An old friend asks Capt. Stubing to leave the ship to help him run his business. A jealous woman accuses Julie of trying to steal her fiancé, a man who was a casual acquaintance of Julie's in college.

As the search for Mallory's nephew continues, a mysterious man begins following Gopher, Marvin, Peter, and Marcia and trying to thwart their efforts. Peter grows suspicious and forces Mallory to come clean about his real reasons for wanting to track down his nephew. A suddenly repentant Mallory tries to make amends with his wife. Peter and his brother's fiancé grow attracted to each other. Capt. Stubing considers taking the job offer so that he can set aside more money for Vicki's college education. Julie's college friend and his crazy girlfriend continue to make her life difficult.

In preparation for a steeplechase race in Mexico, one of the racers spends more time with his horse than with his wife, who finds comfort in the man's business partner. A Hollywood actress disguises herself as her secretary to obtain privacy but ends up falling for a reporter sent to interview her. A wealthy racer falls for Julie and proposes to her. Gopher and Isaac stable a horse on board. The Village People also have a horse in the race.

An unwed mother's infant son has an unusual way of showing his disapproval to men who try to romance her. Isaac gets the crew to bolster his stagestruck aunt's ego, which turns her into an outrageous prima donna and upsets his uncle. Two sets of parents go overboard trying to spark a romance between their respective children.

A kleptomaniac seeks the help of a psychiatrist to deal with her problem. He tries to distance himself from her when they begin falling for each other. Capt. Stubing's brother Marshall returns to the ship to get married. He has second thoughts when his fiancée reveals that she is broke, and is tempted by a past fling. A television star comes aboard the ship to accept a hero award on behalf of his character, a tough detective. A loudmouth begins harassing him, causing him to look bad in front of both his manager/girlfriend and number one fan Vicki.

A model pretends to be married to keep away annoying suitors. The captain's ex-girlfriend comes aboard the ship and constantly makes passes at him because she feels neglected by her husband. A man is convinced that a fellow passenger is an alien who turns into a plant every night.

A stowaway convinces the crew that a playboy passenger is his father. Capt. Stubing decides to get Vicki a parrot for Christmas. Unfortunately, it hasn't been trained to talk, and Gopher and Isaac's efforts to train it prove disastrous. A father and son, who haven't spoken for ten years resist their wives' efforts to reunite them.

A woman tries to get her husband's attention by claiming that Doc made a pass at her during an examination. A couple takes a cruise to celebrate their 40th anniversary but considers breaking up after the husband learns that his wife secretly invested money in the stock market for years. A man sneaks on the cruise because he doesn't believe the man traveling with his girlfriend is her brother.

Isaac tries to avoid his former English teacher; A man boards the ship with a seal that protests the man's romance with an attractive woman; A married woman, convinced that she has a short time to live, wants to pick the perfect wife for her husband.

Doc's love life suffers when an overly expectant father thinks his wife is giving birth; Vicki sees green when her dad falls for a beautiful woman; A judge finds herself attracted to a man she has placed on probation for being married to three women at once.

A young woman traveling with her parents meets and falls in love with a man, but she does not know that she is dying from leukemia. April becomes a nanny to the two children of a TV sportscaster. A loan shark sends a man to collect an outstanding debt from a passenger.

Isaac and Doc's joke backfires when the girl they have been writing love letters to under Gopher's name shows up; A couple drift apart over work habits; A woman refuses to share quarters with her boyfriend.

A social-climbing fiancée runs into an old friend; A man stands to lose $10,000 to his friend, who only needs one more romantic conquest to break the world's record; Doc is leery about entertaining his friend's amorous wife.

An aqua-phobic man deathly afraid of water causes havoc among the crew and passengers as he tries to overcome his fear. Julie has a bittersweet reunion with her college sweetheart. Isaac recruits three cabin stewardesses to sing with him so he can win the attention of a talent scout.

April and her charges accidentally find themselves on board while her employer and his new fiancée set sail. Gopher's college friend tries to please both his boss and the boss' daughter. A man falls for the mother of his old college friend.

A female nudist gets help from an attorney when she wants to bare it all. A self-pitying blind woman who is afraid to love meets a man and thinks his attentions are based on pity. A recently divorced man believes that his cabin is wired for sound.

A clothes-conscious mother gets a surprise when she meets the object of her daughter’s affection. Isaac is embarrassed when his crooked uncle boards the ship. Doc is deeply concerned about the decision a young doctor and his bride-to-be have made regarding their future.

The ship’s boutique manager finds plenty of shipboard company when all three of her fiancées join her. Gopher and a hard-nosed customs agent inadvertently discover they have something in common besides insults. A domineering mother tries to break up a romance between her son and a gorgeous girl.

Doc is in for an exciting adventure when he becomes the target of a jealous lover. Julie is dazzled by the affections of two executives who are accompanied by their boss. The captain's wealthy Aunt Hilly wants to take Vicki away with her and send her to a private school.

Three members of an old-time bank-robbing gang hilariously try to rob the ship's vault. A formerly fat man's fat girlfriend is jealous of his new thin physique. Captain Stubing becomes concerned about Vicki and her gambling.

A husband and wife who own a model agency spar over the use of one of the models who has captured the Captain's eye. A cosmetics king searching for a unique woman to represent his new product finds two competing candidates. A couple tries to keep their marriage secret from the woman's father.

As the fashion show extravaganza takes place, a couple is in frantic search of some designer clothes that they have misplaced, while Julie gets the limelight when she stands in for a model friend who has fallen in love.

Two fun-loving bachelors find out that money isn't everything when they meet a beautiful maid. An employee of the ship leaves his infant son with Captain Stubing. Gopher's Aunt Loretta fears that the truth about her money will be discovered.

Julie falls for a handsome veterinarian. A divorced couple is forced to share quarters. Vicki becomes a stand-in for a bratty television star.