Competitiveness gets the better of Greg and Kim and Jimmy and Christine after Sam's new girlfriend ""dumps"" him for Logan.

When Jimmy comes down with a case of the sweats and a decreased interest in sex, he goes to the doctor, who diagnoses him with andropause (male menopause) -- which leaves him feeling insecure about his masculinity.

At the gang's high school reunion, Greg plays along after he gets mistaken for one of the cool kids, but Jimmy is jealous when Greg's stolen identity threatens to challenge his bid for ""Coolest Guy."" Meanwhile, Kim schemes to get her high school stalker interested in her again. And a dirty, old teacher is still interested in Christine.

Christine goes to work for Greg as his personal assistant, and finds the job entails being Kim's personal assistant, too.

When Christine finds out Jimmy has been tuning her out over the phone, she joins forces with Kim, and they concoct a scheme to get even.

Jimmy and Christine strive to move out of Greg's guesthouse and into the newly-vacated place next door, but when Greg hits it off with an upper-class couple who are also prospective buyers, he hopes they become his new neighbors and not the Hughes.

Greg and Jimmy have a not-so-neighborly war over Jimmy wanting to cut down a lemon tree in his backyard that Greg is attached to.

When Tom comes to town to participate in a senior fencing match and Big Jimmy has also shown up to help the Hughes with their house, Big Jimmy throws his hat into the ring and challenges Tom to a duel.

Christine wants to make new friends after she overhears Kim telling Greg that she and Jimmy have been spending too much time over at the Warner house instead of their own. Meanwhile, Greg and Kim make new friends that they want to get rid of.

Unable to find employment after giving up his job at Radford, Greg is forced to swallow his pride and take a position outside of the movie world. But when he finds out his house is covered in toxic mold and unfit to live in, he's unable to swallow it a second time.