Now that Jimmy & Christine are homeowners, they have become the popular family in the neighborhood. Greg does not care but Kim is upset. Kim throws a party to show they are just as popular.
Greg and Kim live in their own home in California. Christine (Kim's sister) and Jimmy live in a nearby apartment. Jimmy talks Greg into allowing Kim and Christine to have a day without the children; he and Greg take the children. to a casino.
Kim & Greg and the kids go on a family vacation with Christine & Jimmy and their kids to Lake Tahoe. Greg does not like staying in a cheaper hotel because that is all Jimmy can afford.
Greg and Jimmy hire a limo for dinner and a Rascal Flatts concert for the wedding anniversaries. It goes bad when the dinner reservations run late and they miss the concert. It gets better when Rascal Flatts mistakenly get in their limo.
Chuck Norris plays himself as an actor preparing for a security guard role in a movie. Jimmy shows him the ropes for being a security guard at the studio.
Jimmy treats everyone to a vacation. Greg comes up with reasons why not and is eventually overridden. Kim and Greg find out Jimmy has found every shortcut way to save money on food, transportation, and entertainment.
At the studio, a piano almost falls on Jimmy. After escaping death, Jimmy goes through his box of "stuff" and finds a list of items he wanted to achieve when he got older. He begins to try accomplishing items still to do.
Greg lost his job at the movie studio and is depressed. Meanwhile Kim finds a damaged wall in the house which reveals water damage and mold. The Warners have to stay with the Hughes while the house is being repaired.
A documentary style program shows Greg & Kim preparing for the birth of their new child. The documentary goes through Greg & Kim meeting, Jimmy and Christine meeting and marrying, both sets of parents, and more. Baby Emily is born.