Mike and Molly plan their third anniversary party, which they do not intend to include Carl in.
Molly plans a party after hearing that Peggy is suddenly retiring.
Molly faces a dilemma when her publisher asks her to make a provocative change to her book.
Molly discovers she has a rival at the police station, so she takes care of the problem in very Molly-like fashion.
Carl, Mike and Samuel take a road trip to Memphis to meet Carl's mother for the first time.
Samuel wants to be a standup comic. Meanwhile, Molly offers advice to Harry which leads to him challenging his protective mother.
At Mike's urging, Molly grudgingly goes to a therapist.
Following a dramatic argument with Joyce over money, Mike and Molly move into Mike's childhood room at Peggy's.