Jessica Day is an offbeat and adorable girl in her late 20s who, after a bad breakup, moves in with three single guys. Goofy, positive, vulnerable and honest to a fault, Jess has faith in people, even when she shouldn't. Although she's dorky and awkward, she's comfortable in her own skin. More prone to friendships with women, she's not used to hanging with the boys—especially at home.
Jess and Nick come back from a book tour for "The Pepperwood Chronicles" across Europe.
Over a drunken power lunch, Jess and Cece decide to stand up to Russell and demand Jess be given more responsibility in her new job. Meanwhile, Nick struggles to come up with ideas for a new book and Schmidt is desperate to get Ruth to sleep.
Nervous about Ruth's interview at a prestigious pre-school, Schmidt recruits Jess to help her prepare. Meanwhile, Nick procrastinates writing, and Winston prepares to confront his fear of testifying in court.
The gang gathers for a one-year memorial service for a beloved friend. Meanwhile, Jess discovers Coach owes Nick a large sum of money.
Jess tries to appease Winston's anxiety about his impending fatherhood by tracking down his long lost dad. Meanwhile, Schmidt goes back to work for the first time since Ruth's birth.
Nick's plan to propose to Jess is thrown off-course when they decide to get a dog, Winston sees color for the first time and Schmidt worries about Cece getting pregnant again.
Jess and Nick make two life-changing decisions and Winston and Aly's big day arrives.
The gang takes a tour down memory lane, which includes a final round of "True American."