When Cece and Schmidt ask Jess and Nick to be their Maid of Honor and Best Man, respectively, their first task is to plan the engagement party. But when Jess invites Cece's mom to join in the celebration, Cece is forced to make a surprising announcement to Schmidt.
Jumping back into the dating pool, Jess finds herself dating a dud (guest star Taran Killam), but falls in love with his perfect parents (guest stars Henry Winkler and Julie Haggerty). Meanwhile, Nick (Jake Johnson) and Schmidt have very different ideas about how to run the bar.
Jess eagerly reports to jury duty, until she discovers she may be up for a work promotion. Meanwhile, Nick reaches his limit with Cece's messiness in the loft.
With Jess sequestered at jury duty, Nick turns the loft into an airbnb in order to help pay for Schmidt's upcoming bachelor party. Meanwhile, Winston asks Cece for help when he suspects KC is cheating on him.
Nick's cousin and his wife visit with a very special request, which prompts Schmidt to offer Nick a glimpse into the future. Meanwhile, Winston and Cece shop for a wedding dress.
Reagan challenges Nick and Winston's indecisiveness when she says she will sleep with only one of them; while looking at wedding venues with Cece, Schmidt runs into his college frenemy, Benjamin.
Things heat up between Nick and Reagan over who can provide the loft with the best air conditioning unit. Meanwhile, Winston uses his “cop voice” to help Schmidt prep Cece for a newscaster audition.
Jess attempts to discover the real identity of a juror who was sequestered with her; Reagan prepares to move on; Winston and Cece help Schmidt overcome his fear of public dancing.
It's time for Cece to move into the loft. While Jess is helping her friend move out of her beloved apartment, she has to finish the school's budget by morning, which the new principal has neglected to tell her. Meanwhile, Winston gets a new partner to avoid having to work side-by-side with Aly.
After Cece receives an exciting new job offer, Jess agrees to help Schmidt with the wedding preparations, but things don’t go as planned when Schmidt’s dad, Gavin, appears. Meanwhile, Winston and Nick get into a competition over whose job is harder.
Jess applies for a job at a progressive new school, but things take a turn when she finds out the principal is dating her ex-boyfriend, Sam. Meanwhile, Nick gets a cold and Schmidt quarantines the roommates to prevent himself from getting sick before his big presentation.
When Jess is served a restraining order by her ex-boyfriend, Sam, she sets out to clear her name with Winstons help. Nick and Schmidt plot against the owner of a trendy new bar that opened on their street.
Jess invents a male alter ego, "Jeff Day," in order to buy a new car from a sexist salesman, but her plan backfires when both Nick and Sam arrive at the dealership pretending to be him. Meanwhile, Schmidt and Cece panic when Winston decides to bring his new prankster girlfriend, Rhonda as his plus one to their wedding.
Despite being happy with Sam, Jess confesses to Cece that she had a sex dream about Nick. And Schmidt attempts to help Winston land Furguson a cat audition when he finds out Aly's boyfriend is a talent agent for pets.
After being emasculated in front of Cece, Schmidt insists on a manly bachelor party weekend in Vegas, but the road trip goes awry when the guys end up at a desert biker bar and he must put his newfound bravado to the test.
Refusing to accept that their crazy days are behind them, Jess and Cece abandon their low-key bachelorette party plans and seek a night out to top all others.
Jess races to make alterations to Cece’s bridal dress, while Schmidt tries to keep his “wedding workshop” a secret at work, and Nick struggles to ask Reagan to be his date to the nuptials. Meanwhile, Winston and Aly try to keep their relationship on the down-low at work.
Jess meets Sam’s female best friend, Diane. Meanwhile, Nick is worried Gavin will disappoint Schmidt again and Winston is offended by a reaction to a birthday gift.
On the night before the wedding, Nick and Winston try to help Schmidt re-write his vows and Jess, thinking that Sam is going to propose to her, rallies the gang into playing True American to avoid giving him an answer.