A cop fresh off an undercover stint with the mob has trouble readjusting to precinct life. Boyle's culinary exploits trigger a janitorial standoff.

After getting stopped and mistreated by an unfamiliar cop, Terry receives some disappointing advice from Holt about how to handle the profiling.

An anxious Nine-Nine awaits news on Rosa after she enters an active shooter situation. Amy and Gina distract themselves by taking on a plumbing issue.

When the FBI takes over a high-profile case, Jake keeps digging. Amy and Rosa negotiate with O'Sullivan and the police union.