Five-year-old Sammy has a girlfriend. Kim arranges a playdate for them, but it's not much fun when Claire starts to play with Logan. Greg and Kim try to make Sammy seem more attractive to Claire again. The competition is on.
Logan learns to read before Sammy. While Greg & Kim worry, Jimmy & Christine each feel they are responsible for his delay. When they watched Sammy when he was young, they were not always careful and Sammy's head got bumped a few times.
Greg goes with Kim, Christine, and Jimmy to their high school reunion. Greg gets mistaken for a cool kid that attended the school; he enjoys the popularity. Jimmy gets jealous because he was always the coolest kid in school.
Greg loses another assistant at the studio, so as Christine finishes up at college, she gets the job as Greg's assistant. Christine quickly finds out why all the assistants quit ... Kim expects them to do jobs for her as well as Greg.
Christine calls Jimmy and starts rambling. Jimmy tunes her out until she asks if something is OK. He has no idea what she said. Turns out she realized it and set him up with a list of tasks. Kim joins in on the prank.
The house next door becomes available for sale. Jimmy and Christine plan to place a bid on it; Greg and Kim would rather have an upscale couple there. The upscale couple gets the house, and the Hugheses and Warners drive them off.
Now that Jimmy & Christine are in their own home, they start to make changes. Jimmy wants to cut the lemon tree in his back yard, but Greg does not want him to do it. To cut or not cut turns into a childish war.
Jimmy's father is in town helping Jimmy & Christine with home improvements. Greg's father is in town to participate in Senior Olympics. Big Jimmy decides to compete in the Olympics against Greg's father.
Even though Jimmy & Christine have their own home, it seems they are over at the Warner's place just as often. Kim complains and Christine overhears it. Both couples try to find new friends, but they encounter problems in their search.
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.
