After faking labor pains, Billie gets them for real. Unfurtunately, Zack gets busted by the first cop they lied to and he is sent to the police station.
Zack gets upset when Billie hires a baby nurse to help them without his knowledge. Meanwhile, Davis and Ryan are put in a dificult position when they know something about the nurse.
Billie without Zack's knowledge goes to Zack's high school reunion but she is worried that she can't compete with Zack's ex-girlfriend because of her pregnancy. Meanwhile, Olivia helps Abby trow a party to sell Abby's miracle youth juice.
Billie tries to manipulate Zack so he does more chores around the apartement, but her plan backfires when Zack ends up decorating the nursery instead. Menawhile, Davis gets a job at a gay bar to earn extra cash.
Billie and Sully work on a story together which leads to a surprising discovery about the paper. Zack begins a new work adventure with Davis as his partner.
As they prepare for a surprise shower, Nick and Abby set up their significant others to keep Billie and Zack occupied. The plan turns into a disaster when the arranged couples don't get along.
Hoping not to ruin their Christmas, Billie tries to keep the fact that Zack is living with her from her parents. Meanwhile, Nick makes an effort to impress his father-in-law.
Billie and Zack attend separate parenting classes due to a conflict in their schedules. Accompanied by Olivia and Abby, Billie faces competition from her sister who does better in the assigned tasks.
Without meaning to, Billie causes the breakup of Abby and her husband after she asks them to be the godparents of her child. Billie has to prevent her sister from making any more mistakes during a night out with Davis.
Zack's plan to surprise Billie with a newly-installed low flow toilet leads to an unpleasant outcome as he and Billie get into their first major squabble. Billie feels nostalgic about her previous relationship with James, who intends to buy a vineyard.
Billie gives Zack and Davis dating advice. Their plans don't go smoothly as the women they are pursuing reveal their true colors. Abby and Olivia are having their own issues with their friendship on Facebook.
Billie and Zack discuss their stand on dating and agree that they can see other people. However Billie sees that any potential candidate turns her down because of the pregnancy.
Billie realizes that men find her more attractive despite her pregnancy. Even Zack sees her curves as a turn-on. Billie makes the move on him, but is turned away by Zack following an untoward incident involving suntan lotion.
As Billie looks through Zack's things, she finds an unfinished note intended for her. With the help of Abby and Olivia, she attempts to uncover what Zack is keeping from her. In the meantime, James places doubts on Zack's mind regarding his ability to be a fit father.
Billie, a newspaper film critic, just went through an ugly breakup with her boss, who still wishes to mend their relationship. After a fling with a much younger guy, Billie ends up pregnant and decides that she really wants to keep the baby -- and the guy she hooked up with.moreless