Louise is up in arms over the new "young" tenant whose just moved into 12C. The young woman's constant partying prompts Louise to call a tenants meeting but ends with Louise discovering a little bit about age when the tenants accuse her of being an "old" fuddy-duddy.
After hearing the news of the divorce, George and Louise get into a big fight with Tom and Helen and the fight continues all the way through Family Night at Jessica's school. The constant bickering leads Jessica to run out of the school and onto the streets of New York.
Lionel and Jenny return to New York after a trip to Japan and they have a very important announcement. This leads Louise, George, Tom and Helen to assume that Jenny is pregnant. However, no one is prepared for their real announcement. They've decided to get a divorce.