Christine considers herself popular by association when Ritchie is asked to a dance by the most popular girl in school, and Matthew and Richard try to evict an elderly woman from the apartment they hope to rent.
Christine only makes things worse when she tries to make amends to a girl she bullied in junior high, while Matthew has a surprise in store for him when he tries to "friend" an ex-girlfriend on Facebook.
Christine impulsively demands change in her life when she discovers that her 5-year car lease is up, and Max responds with a marriage proposal. Meanwhile, Matthew seeks a new roommate after Richard moves back in with New Christine.
Matthew reluctantly agrees to stay with Christine to protect her from a prowler in the neighborhood, and New Christine does everything in her power to keep her baby from being born on Christine's birthday.
Christine feels like she is dumb after she meets Max's super-smart ex-wife at Christine's "surprise" engagement party, while Richard is forced to improvise when New Christine won't let him hold the baby.