Da Vinci and Chief Jacobs negotiate a tenuous compromise on the level of police cooperation with the Crab Park squat, the Red Light zone, and the Fire Department initiative of posting notices on grow houses. But when a grow-op raid goes tragically wrong, the police circle the wagons to protect their own.

Da Vinci must defuse an impending war between the city's most powerful unions when the Police suggest that a Fire Department inspection notice tipped off a grow operator to an impending raid, causing an officer's death. Leary's investigation of a pedophile ring leads to a prominent developer and an old nemesis.

Da Vinci schemes to placate Chief Jacobs with an offer of more police officers, paid for by slot machine revenues. The Crab Park squat is threatened by a massive development plan and by Zack's discovery that Friedland may not be who he seems. Kosmo and Finn join Leary on the pedophile case, but the investigation stalls when two key witnesses suddenly stop talking.