The Gavins attend their first AA meeting, but Sean isn't welcome since he doesn't drink enough; Tommy turns to Colleen for information about Janet and learns some disturbing things about his childhood from his father; Richie tells Franco what Natalie has been doing since their breakup; Lou mulls revenge on his cousin; and Mike, under orders from Tommy to "stop moping," visits a singles bar.

Tommy plays hero in someone else's uniform, confusing the crew; Colleen finds a new reason to get upset with Tommy; Natalie asks Franco for a favor; a rift between Mike and Black Shawn nearly leads to blows; and the chief is not pleased with the move Tommy makes on his daughter.