An angry Jerry Seinfeld goes to 30 Rock to confront Jack after he learns that Jack plans to digitally insert him into every current NBC program. Meanwhile, Liz buys a wedding dress, even though her marriage prospects are slim.
Jack's rival, Devon, comes up with a new plan to get in tight with Don Geiss. Kenneth has a plan to get Tracy jealous about his wife, and Jenna finds a way to use her weight gain to her advantage.
Jack hopes to be G.E. CEO so he hires a private eye to find any issues about himself. The P.I. exposes Jack's cookie jar collection. Jenna gains weight doing a musical Mystic Pizza, making her beloved by fans but she loses weight, panics.
Liz befriends a female comedy writer from the 1960s who was one of her idols, until she realizes how pathetic the woman's life is now. Meanwhile, Jack has to find a way to talk Tracy out of taking up dog fighting.
Jack hires an actor to play the superhero "Greenzo," who is to promote environmental consciousness (and G.E. products). But what happens when Greenzo becomes drunk with power?
Jack has a one night stand with a Democrat who is campaigning against one of NBC's sister companies, Liz suspects her neighbor is a terrorist, and Kenneth tries to raise money to buy Jack a pair of pants.
Liz catches a lot of heat at the office when she starts dating a 20-year-old "boy toy," and Jack takes charge of Tracy's pitiful youth baseball team and tries to turn it into a winner.
C.C. wants to go public with her relationship with Jack after talking with Liz, Toofer and Frank take their feud to dangerous levels, and Jenna becomes jealous because she thinks Tracy is getting more attention.
Jack gets attached to Liz's nurturing parents because they provide the love and support he never got from his mom. The staffers get ready for their raunchy holiday party, but Kenneth changes their plans at the last minute.
Jack asks Liz to deal with a group of German TV execs so he can spend more time with C.C. but Liz has fallen in love with a piece of real estate. Tracy buys a cappuccino machine and gets Kenneth addicted to caffeine.
While the entire cast and crew is obsessed with watching the season finale of MILF Island, Liz tries to keep Jack from knowing that she is the person who made negative comments about him to a newspaper journalist.
Jack asks Liz to get her ex-boyfriend Dennis for the show after he becomes a hero for saving someone at a subway station, and tries to get Tracy to become an African-American spokesman for the Republican party.
Don Geiss is prepared to name Jack as his replacement instead of his future son-in-law, and Jack is ready to name Liz as his replacement. Tracy tries to create a pornographic video game.
Jack's career at GE is on the line with Don Geiss in a coma, one of Liz's old flames comes back to town, and the guys confront the Teamsters on their sandwich day to get an extra sandwich for Liz.
Liz has a positive pregnancy test, and thinks that Dennis is the father. Meanwhile, Jack regrets taking the Homeland Security position, Tracy finishes his pornographic video game, and Kenneth tries to get a job at The Olympics.
