Jake and Amy work together on a case, and wind up arguing over Jake's old, worn-out mattress. Meanwhile, Boyle scratches Holt's prized car, and the teenage boy Rosa sponsors as a "big brother" is in trouble with the law.
Jake and Amy convince the Captain to let them work a case together involving a new street drug, but their new relationship gets in the way. Meanwhile, at the precinct, Charles panics when he realizes he's damaged one of Holt's prized possessions and Terry teaches Rosa a lesson in discipline.
