Concerned about the uniformity of Ritchie's schoolmates, Christine takes it upon herself to help diversify the student body at his private school.

Christine feels pressured to throw an extravagant party for Ritchie's 9th birthday, his first involving other children from his new private school. Recoiling from sticker shock after meeting with a ritzy event planner, Christine decides to have an arts and crafts party at her home, with mixed results.

Since "New" Christine broke up with Richard, he's been spending a lot of time at her house, leading Ritchie to believe that his parents are back together. When Christine tells Richard that Ritchie told this to his new teacher, Mr. Harris, Richard suggests that they give their relationship another try.

Christine's attraction to Ritchie's teacher causes a scene at a school fund-raiser--especially after she wins a playdate with the man.

On their way to Ritchie's desert camping trip, Christine, Richard, Matthew, and Barb stay at a seedy motel and get on each others' nerves.

Roles reverse when Christine's dubbed a "meanie mom" by a father at Ritchie's school who finds Marly and Lindsay to be to his liking.

Christine tries to control her hormones when her gynecologist says she may be entering perimenopause.

A talent scout caught Ritchie's great school performance and he liked what he saw and offered him a audition to do a TV commercial, much to a thrilled Christine, but Richard won't approve of it and refuses to like him go.

After the mothers at Ritchie's private school continue to take cheap shots at Christine, Christine decides to enroll him in public school.

When Ritchie is asked to a dance by the most popular girl in school, Christine believes that she is popular by association and has finally surpassed the Meanie Moms. Meanwhile, Matthew and Richard find an apartment that they want to rent together. Unfortunately, they will have to find a way to evict an old lady that lives there before they can move in.

Christine tells her therapist, Max, that she is in love with him, but his reaction is not quite what she is expecting.

In an attempt to teach Ritchie's class some street smarts, Christine encourages the school administration to let them take the subway on a field trip, but she ends up being stranded at the station when the trains leaves without her.

Christine realizes that Ritchie has never been on a real family vacation, so she plans a trip to Florida, with disastrous results.