Jake and Amy's relationship gets in the way as they work a case involving a new street drug. Charles panics after damaging one of Holt's prized possessions, and Terry teaches Rosa about discipline.

Jake and Charles take Terry on a camping trip to help him relieve stress. Amy enlists the help of Gina in trying to convince the NYPD to purchase a product she invented as a child. Meanwhile, Holt tries to help Rosa break up with Marcus.

Holt and Peralta compete for the title of "amazing detective slash genius" in their third annual Halloween heist

Jake asks Holt for help keeping a case involving a serial killer under the radar. A former adversary makes demands of Amy and Rosa, and Terry develops a new obsession.

Jake thinks an art gallery owner named Genevieve (Mary Lynn Rajskub) is Boyle's soul mate and tries to set them up on a date; Rosa tracks an inter-precinct theft; Holt asks Amy for help with an image campaign.

Another personnel change could threaten Jake and Amy's burgeoning relationship; Terry helps Holt with a public relations matter; Gina and Rosa hope to change Charles' mind when he falls for a fellow officer (Archie Panjabi).

After Holt is transferred, the precinct's new captain arrives, creating chaos; Amy and Jake face the consequences of their kiss.

When Jake and Amy go under cover to catch an identity thief, the investigation brings them closer.

When Wuntch lets Jake work his dream case, Holt worries she is setting them up to fail. Meanwhile, Terry hopes to get his girls off the wait list for a magnet school by hosting a field trip.

Jake is jealous when a detective from another precinct wants to ask Amy out on a date. Linetti and Boyle try to keep Jeffords from taking a job with a private firm, but captain Holt seems to be pushing him out the door.