Jake and Holt remain in Florida, adjusting to their new lives under the Witness Protection Program, while Jimmy "The Butcher" Figgis is still on the loose. Their one human link to their regular lives is U.S. Marshall Karen Haas, but their anonymity may be in danger when a video of them goes viral.

After Jimmy "The Butcher" Figgis sees Jake and Holt's viral video, the two begin plotting their attack. However, when caught red-handed, they are forced to experience the other side of the interrogation table. Back at the precinct, a questionable new Captain takes over.

The team makes a road trip to Florida to try to help Jake and Holt take down Figgis. With an unforeseen injury and yet another interruption by Sheriff Reynolds, the plan doesn't follow through quite like they all had hoped. In the midst of the chaos, Jake and Amy share an awkward reunion.

As Jake struggles with his first case back at the precinct, he encounters Jess Day, who is visiting New York, and enlists her to help him find his suspect. Meanwhile, Holt researches ways to increase office morale and Amy tries to figure out why Rosa keeps taking such long breaks.

It's Halloween in the Nine-Nine, which can only mean one thing: heist time. This year, the squad members pull out all the stops in their quest to win the new defending title of "Ultimate Detective Slash Genius." Lines are drawn and plans are made, but there can only be one reigning champion.

Pimento and Rosa decide to pick up where they left off and get married, so the whole squad preps a perfect wedding under Amy's careful direction. Pimento enlists Jake and Gina to hunt for his grandmother's ruby earrings for Rosa to wear in the ceremony, but the universe has other plans for them.

Amy's father, a former cop, comes to Thanksgiving dinner and Jake tries to impress him, leaving Charles on turkey duty. In the meantime, Holt helps Pimento come to terms with the fact that he can no longer be a police officer.

Terry meets his lifelong hero, a famous author who's received death threats. In other events, Gina tries to choose the location of the Boyle family vacation and Amy sides with Kevin in his argument with Holt over a math puzzle.

Jake and Holt help Captain CJ with a big case.

Jake and Charles face off against a Latvian criminal ring when Jake helps Charles find his son's favorite toy for Christmas.

A mass escape of convicts from a prison van in the streets of Brooklyn sends the entire squad on a manhunt. The only key witness? Former NFL running back Marshawn Lynch (guest-starring as himself). Meanwhile, Jake and Amy place a bet on who can bring in the most escaped convicts - and the loser has to move into the winner's apartment. Then, with only one fugitive still on the loose, Jake enlists a surprising ally.

With the crime rate lowered, Brooklyn will be shutting down one of its precincts - permanently. The Nine-Nine is confident they will be evaluated fairly, until the official auditor turns out to be Amy's ex-boyfriend, Teddy (guest star Kyle Bornheimer). The whole squad then must band together to try to save the precinct.

Terry's ex replaces Teddy in evaluating the precinct, but Jake and Rosa are distracted by a burglary case that occurred on the set of their favorite detective show, leading the pair to pass time with the series star and producer, who meddle in the case and charm Jake with the glamour of show business.

Jake and Charles go to extremes to apprehend a local bike thief in what could be their last case as partners. Meanwhile, Terry isn't in the lead for Mr. Nine-Nine, leaving Rosa determined to boost his ego; and Amy spends some precious time with Holt.

Terry wants to file an official complaint against a police officer who stopped Sgt. Jeffords while he was off-duty in his own neighborhood, but Capt. Holt has other ideas. Meanwhile, Jake and Amy get a glimpse into the difficulties of parenthood and answer some tough questions when they babysit Terry's kids.

The precinct packs up and heads to the Tri-State Police Officers' annual Cop-Con, which is usually the Nine-Nine's excuse for a big annual party. But the squad's fun is threatened this year when Holt asks them to be on their best behavior. Then, Amy suddenly vanishes hours before taking the Sergeant Exam, and it's up to Jake and Rosa to find her before it's too late.

Amy suddenly vanishes hours before taking the Sergeant Exam, and it's up to Jake and Rosa to find her before it's too late.

Captain Holt's mom (guest star L. Scott Caldwell) seeks support from the precinct after her house is robbed. Meanwhile, Terry, Rosa and Boyle remodel the breakroom and Amy teaches Gina how to change her own car tire.

Jake and Rosa try to earn the respect of their idol, Lieutenant Melanie Hawkins (guest star Gina Gershon), while Charles, Terry and Gina test different parenting methods to resolve a conflict between Scully and Hitchcock.

Jake and Rosa continue their search for a bank-robbing operation with Lt. Hawkins and discover a dangerous secret, leading them to call for back-up from Holt and Pimento; and Boyle objects to Gina's new boyfriend.

Jake and Rosa are framed for a crime they didn't commit, and it's up to the squad to find a way to bust them out.