New Arkham City inmate and rising warlord Two-Face devises a plan to publicly execute fellow prisoner Catwoman after she tries to steal back some of her ill-gotten gains from his hideout. Meanwhile, Gotham City itself has degenerated into a police state managed by Mayor Sharp, where citizens with the slightest trace of a criminal record find themselves shipped to the prison district. Those who dare to challenge Sharp’s policies are the target of arranged disappearances, becoming political prisoners trapped behind Arkham’s walls. Among these is Bruce Wayne, who holds a rally attacking the proposal of turning half his city into a walled-off reserve for criminally inclined persons. Segregated from society, he argues, they have become responsible for their own survival in an anarchic urban hell which is characterized by bloody gang wars.