Gretchen makes an attempt to reconnect with her old group of friends by throwing herself a housewarming party. Jimmy does his best to affirm his belief that friends are for babies. Edgar continues his pursuit of Lindsay, and Lindsay meets her estranged husband's new girlfriend.
Gretchen misses her old "posse" and decides to have a get-together with them at Jimmy's house. It becomes a full blown party, to Jimmy's dismay.
Edgar approaches Paul for permission to woo Lindsay. At the party, Gretchen finds that one of her friends has brought her baby, another is pregnant and a third is in rehab.
Young Killian tends bar at the party, avoiding his parents' troubles at home. Paul appears with Amy, his new girlfriend.
Lindsay uses Edgar to make him jealous. Vernon arrives and tries to bond with Jimmy, who has taken refuge in the basement.
Paul gets drunk and throws up, recording all the details in his personal phone log.
Cory, the one remaining member of Gretchen's posse who still parties, shows up late, homeless and strung out.
She offends all her former gal pals and leaves with Jimmy's stereo.