Jamie is dismayed to find her mother is dating, and the man is younger than her mother. Paul wants Jamie to start Mabel with bottle feeding so he could help feed Mabel. He points out all the times Jamie is late getting home to feed Mabel.
Paul & Jamie have their apartment baby-proofed. Also, Paul is guest lecturing at a class. Turns out the instructor is someone Jamie dated while in college, and thought was the best lover. The instructor does not remember Jamie.
Paul & Jamie fly to California on separate planes so if a plane crashes. Paul takes Mabel and has a range of people helping and not helping him. Jamie is seated near the annoying parents from The Birth episode.
Paul and Jamie attend a party held by their therapist, Sheila. They meet another therapist there and relate more to him than Sheila, so they want to start going to him. Meanwhile, Burt & Sylvia have a spat, and Burt stays with Paul & Jamie.
A review of Paul's documentary comes out. The review is positive, but the movie facts are wrong. Jamie starts a new job and misses Mabel. She wants the company to fire her so she tries to be annoying by getting constant interruptions.
Paul receives a postcard from a woman who turns out to be Paul's first wife, someone he married so she could get a green card. Meanwhile, Paul is a referee for Burt's baseball game with other senior citizens.
The Buchman's have a party for Paul's birthday. Food is stored at the neighbor's and with the in and outs to pick up food, the neighbor's valuable painting is stolen. Marvin gets a scratch from Paul's dog; he turns it into a major injury.
Jamie invites her friend Sara to join the Mommie and Me Group. Paul & Jamie find out how much Sara's child watches TV shows. Paul, Jamie, Ira, and Debbie decide to create a child's video as a money making project. Of course, problems arise.
Paul -teaching opportunity in Scotland; Jamie -quitting her job; Ira -sandwich named after him; Joan -named eligible bachelorette. Paul-does not want to move; Jamie-wants to move; Ira-no sandwich, Debbie-upset at Joan. Then a fire at Riffs.
It's Mothers Day, and Paul is stumped as to what to get. Ira got a great present for Jamie; Marvin has a great idea for his mother. With all attention on Jamie, Sylvia feels forgotten and fakes a broken leg to get attention.
Paul takes a shower and slips on a bar of soap. Events from Paul's life flashes before his eyes - scenes from his childhood, life with Jamie, taking care of Mabel, counseling sessions, including his eating the last pack of cookies.
Nat, the dog walker, is interested in Arley, the babysitter. Paul advises Nat to wait for Arley to make the first move. Jamie advises Arley to wait for Nat to make the first move. Ira says he is done with sex after seeing his naked body.
Paul is making a documentary about The Making of the Titanic, and interviewing workers. Ellen DeGeneres stars as a caterer for the production crew, and Paul accidentally gets her fired. He hires her as a nanny for Mabel.
Jamie tells Paul they should renew their wedding vows. Paul is not enthused about it. Paul has tonsillitis but Jamie thinks it is just a sore throat. Lisa is a mentor to a young teen. Mabel says her first word.
Jamie's ex-boyfriend Alan (S3.E7 and more) dies and leaves all his possessions to Jamie. Paul does not want Jamie to accept the money and possessions. Debbie and Joan have an argument over setting a wedding date.
Jamie and Paul make love in the afternoon, and Jamie is energized. Lisa and Ira watch Mabel, and Lisa decides she wants her own baby. She decides to adopt a pet cat. She gets one that is wild and unfriendly.
Paul & Jamie's therapist suggest they do not talk for the rest of the day in order to improve non-verbal communication. Of course, they have more visitors during this time, each wondering why they are not talking.
Paul & Jamie fly to Los Angeles to see an agent interested in representing Paul. Jamie enjoys the pampering and luxury without caring for a baby. She does not want to go home and wonders why she had a baby.
At Mabel's checkup, the doctor says it is possible Mabel is allergic to something, possibly to Murray. Paul & Jamie host Thanksgiving dinner and invite a collection of random friends and acquaintances. The charades game does not go well.
Paul feels responsible when their neighbor Hal throws out his back, so he hires a gorgeous nurse. Jamie and Paul argue over the choice of nurse. Hal suggests they write down their argument, bury the notes, and then forget the argument.