A father and the former nanny to his children prepare a merger between his company and a European conglomerate.

The Caldwells take a family trip to Puerto Rico where their father is also securing a secret business deal, while the kids find their own paths. Eight years have passed since the events of Au Pair, and newly graduated as his high school's valedictorian, Alexander Caldwell joins his visiting sister, college freshman Katie and her roommate Ariana on a family summer vacation with father Oliver and stepmother Jenny. Oliver and Jenny's current nanny declines to join them and the over-worked parents/executives must take care of their newborn baby Sarah in Puerto Rico. Amidst corporate scheming by the young company CFO Walter Hausen, who is planning a takeover of Oliver's company CCI Tekhausen (formed in Au Pair II), Oliver and Jenny must contend with bridging the generation gap with the family, new career motivations and the romances of their 'newly reformed' prankster kids.

A young MBA mistakenly interviews for the wrong job... and ends up as an Au Pair for a pair of snotty rich kids.

When Sara takes Beethoven to spend summer vacation with wacky Uncle Freddie in an old mining town, the mischievous canine "digs up" the missing clue to a legendary hidden fortune of Rita and Moe Selig. Now everybody wants to be the dog's best friend as his discovery unleashes a frenzy of treasure hunting among the community's cast of kooky creatures. With help from Uncle Freddie and Garrett (a friend or maybe more), Sara and Beethoven try to help uncover a secret that has been in the crazy little town for years.

Three middle-aged daddies visit California to have a marvelous time at the beach. When they learn that a nice apartment and an expensive cabriolet isn't enough for them to score with the chicks, they employ a student to help them. At first he's as disgusted of them and his job as his girlfriend, but soon they find out how to use the situation to everyone's benefit.