The couple invite friends and family to a very awkward celebratory party. The animosity between Sharon and Rob's mother boils over, and they make a very unfortunate discovery about another family member.

An overly flirtatious new co-worker frustrates Rob. Sharon feels out of place at her mommy-and-me class, but she may be too dependent on the friendship of the only other normal mother.

After news of a friend's separation, Sharon decides to inject some passion into her and Rob's life with a romantic trip to Paris. Chris goes out on the town.

Things are certainly less catastrophic for Sharon and Rob as they celebrate their anniversary with a night out. Their friends, however, are a different story: Fran dates a possessive man, Chris has an awkward hook up, and Dave must decide whether to change for a new girlfriend.

Sharon resolves to return to teaching, but she must control her nerves for the interview. Tension with his flirtatious co-worker causes Rob to make a huge decision about his career.

Rob bonds with Dave when both reach an all-time low. After a girls' night out with a divorced friend, Sharon struggles to remember the night's events.