Medavoy and Sipowicz go undercover as Hasidic Jews to recover a stolen Torah. Meanwhile, Simone gets a case where a father suspects his intellectually disabled son of killing his daughter. Detective Stuart Morrissey tactics with the suspect does not sit well with Lt. Fancy, despite the facts that the case match the one Simone are working on. Also, Sylvia visits a doctor who confirms that she's pregnant, and Lesniak keeps checking up on Martinez still in the hospital.

Simone makes contact with Ferdinand Hollie, an old informant, who wants to help him capture a pair of Colombian drug dealers who killed a young girl with their crossfire. But Hollie, a drug addict who is HIV-positive, has his own agenda to rob the Colombians. Meanwhile, Russell is paired with Sgt. Ray Kahlins, a "blowhard" from the federal anti-drug unit who is more interested in collecting overtime pay than catching a separate pair of drug dealers during a stake out. But Kahlins' brash tactics and disrespect for Simone and his informant Hollie, put both cases at risk. Also, Medavoy and Martinez investigate the murder of a Santería priest found in a local sewer and try to link a parole officer and a recent parolee to the crime.

Sylvia confronts Sipowicz about her suspicions that he is going to late-night bars and drinking again, and the effect is everywhere. Lt. Fancy is forced to sent him home after Sipowicz walks in one morning drunk. Sipowicz even fights with some street punks, gets beaten up, and Simone offers to look for the men that beat Sipowicz up. Meanwhile, a new administrative assistant, named Lucy, arrives as Donna's replacement. Also, Russell investigates a young woman, named Angela, who claims to have been stabbed by her jealous boyfriend. Simone, following a lead from a streetwalker named Deena, finally tracks down and confronts the two thugs who murdered Andy Jr. and guns them both down in a hail of bullets.

Medavoy starts a bet with Sipowicz to see who can lose the most weight in a single month. Afterwards, Sipowicz and Simone help out Detective Stuart Morrissey on his investigation in the case of a missing baby. Meanwhile, Martinez campaigns to become the elected delegate for the squad and his opponent, Detective Vince Gotelli, is determined to win the seat himself. Also, Simone makes a deal with Henry to let him share ownership of the building.