Mary's ex-boyfriend, Bill, shows up from out of town and she invites him to her apartment that night; the evening proves to be a disaster when Lou shows up intoxicated and insists upon using her typewriter to write a letter to his wife.

Mary and Rhoda decide to become more involved socially when they both panic about being 30 and single.

Mary is pressured by a neighbor to baby-sit her daughter while her husband has the chickenpox.

To get group rates for a trip, Mary and Rhoda join a club for divorced people.

Mary tries to help an ex-football player get a job as a sports announcer.

When Rhoda's mother appears at the apartment building, Rhoda pretends not to be at home and Mrs. Morgenstern is invited to wait in Mary's apartment. Unable to convince Rhoda to see her mother, Mary allows Mrs. Morgenstern to stay with her a few days.