Robert Talbot, an American millionaire, arrives early for his annual vacation at his luxurious Italian villa. His long-time girlfriend Lisa has given up waiting for him and has decided to marry another man. Meanwhile, his sneaky business associate Maurice secretly misappropriates the villa as a hotel while Talbot is away. The current guests of the "hotel" are a group of young American girls.

In 1940s New York, a white widow who dreams of being on Broadway has a chance encounter with a black single mother, who becomes her maid.

Due to an accident while swimming in the sea, Francis meets the surfer Moondoggie. She's fascinated with his sport and starts to hang out with his clique. Although they make fun of her at first, they teach her to surf and soon she's accepted and given the nickname "Gidget". But it's hard work to become more than a friend to Moondoggie.

Joan Howell, a young and pretty maid-for-hire, meets and begins dating wealthy New York City businessman Tom Milford. Embarrassed about bringing him back to her tiny apartment that she shares with her roommate Audrey, Joan brings Tom over to a fancy apartment that she cleans on a daily basis not knowing that it's his place. Tom plays along with the charade despite not knowing who Joan really is, while she tries to tidy up Tom's place not knowing who he really is.

Tammy leaves the river in Mississippi to attend college, developing a relationship with Tom Freeman (John Gavin). Sandra Dee replaces Debbie Reynolds in this and the third Tammy movie. This film introduces both a new theme song, "Tammy Tell Me True", and the character of Mrs. Annie Call, played by veteran Beulah Bondi. Mrs. Call ultimately moves in with Tammy at the Ellen B. and would be the catalyst for the events in the following film, "Tammy and The Doctor".

After reluctantly packing up his daughter, Mollie, and sending her away to study art at a Paris college, Frank Michaelson gives new meaning to the term "concerned parent." Reading Mollie's letters describing her counter-culture experiences and beatnik friends, Frank eventually grows so paranoid that he boards a plane to Paris to see firsthand the kind of lessons his daughter is learning with her new artist amour.

In Wyoming, mountain trapper Yancey goes to the nearest town to trade his pelts but gets into trouble when he tries to save runaway dance-hall girl Rosalie from her shameful job.

While visiting her father, an American teenage girl is thrown into London society during its final "Debutante Season."

Rich socialite Chantal marries photographer Eugene and everything seems blissful until her envious friend attempts to break them up. In desperation, she turns to her mother, but the advice she receives may do more harm than good.

A pair of lovers plot to kill the woman's rich husband.