Christine tries not to have a meltdown when her ex-husband, Richard, brings his "new" Christine with him to pick up Ritchie and take him to breakfast so that they can get to know one another. By day's end, Christine tries to pull herself together to make a good impression at parents' night at Ritchie's school, but is caught off guard when "new" Christine shows up as well.

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

When Christine's environmentally-friendly hybrid car and Marly's gas-guzzling monster SUV hit one another, it becomes a bigger dispute than simply who hit whom. While her car is in the shop, Christine is forced to go against her principles and rent a luxury SUV when no other car is available.

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.

Barb's profile in a business journal brings in new clientele.

The girls change their building into a spa after learning that they can't get a loan to keep their gym afloat.

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.