While patrolling Gotham one night, Batman spots Catwoman stealing from a high-tech building, and chases her, eventually catching her and taking her to Blackgate. Two weeks later, Captain Gordon contacts Batman to inform him of an explosion at Blackgate, as well as multiple hostages held by the now free inmates. The prison has been divided into three main territories, each one held by the Joker, Penguin and Black Mask. Upon entering the prison, Batman encounters Catwoman, who informs him of hostages held inside the maximum security area of the prison, known as the Arkham Wing. As Batman, the player can choose to pursue the three bosses in any particular order.