When Jack discovers that his boss is retiring, he decides to get in the competition for his position. Meanwhile, Jenna begins to enjoy her fame for being fat and along with Jack encourages Liz to get her act together. Finally, Kenneth makes it his mission to get Tracy and Angie back together.
As the cast and crew of TGS with Tracy Jordan returns for a new season, Liz is excited to see Jack again. However, her excitement quickly fades as Jack insists that Liz is still not over Floyd. Meanwhile, Jerry Seinfeld shows up at Jack's office in an upset mood after Jack announces his newest plan. Finally, Kenneth becomes Tracy's office wife when Tracy separates from his wife and Jenna returns to set a whole lot heavier now that she has been involved in Mystic Pizza: The Musical!.
As TGS' summer hiatus approaches, Liz deals with the difficulties of her long-distance relationship with Floyd while she enlists Kenneth's help in locating on-the-lam Tracy. Meanwhile, Jack's impending marriage to Phoebe brings his mother, Colleen Donaghy to town.
Sick of New York and frustrated with his career, Floyd contemplates a move to the Midwest and asks Liz if she's consider leaving TGS behind. Jack rushes to Paris (and soon, the altar) with Christie's auctioneer Phoebe while Tracy works furiously on financing his latest career move, dubbed the "Tracy Jordan Comeback."
The tables have turned inside 30 Rock: Liz is actually happy in her new relationship with Floyd while Jack finds his job may be in jeopardy after his televised fireworks fiasco prompts top GE man Don Geiss to warn he's got his eye on Jack's performance. Tracy vies for Geiss' attention, hoping to turn his feature film idea for Jefferson into a reality.
Jack and Kenneth work together when Jack discovers that another NBC executive is after his job. Meanwhile, Pete and Liz adjust to life as roommates and Tracy receives paternity papers.
Jack helps his brother Eddie land a job at 'TGS', Liz is forced to make desperate staff cutbacks, and Tracy seeks spiritual fulfillment with help from Kenneth.