Herman's sister Suzy comes back to town and manages to aggravate both Herman (she plans to become a writer) and Louise (since she previously dated Jay). Appropriately, the "brain" characters get a new and annoying addition when Jealousy joins their group.

Herman gets to work with Maureen McCormick as she writes a book on contraception, getting to fulfill his long-time crush on the actress. Unfortunately, he and Jay almost come to blows when a jealous Jay confesses to a similar crush.