The inmates of Arkham Asylum take control of the institution and demand that Batman join them inside. Led by the Joker, the uprising turns the asylum into a disturbing labyrinth where criminals, symbols, and memories constantly challenge the hero’s perception of reality. As Batman moves through Arkham’s corridors, he is confronted not only by his enemies but also by his own fears, while the story of the asylum’s founder, Amadeus Arkham, gradually reveals the dark origins of the place. The confrontation becomes an exploration of madness, identity, and the fragile boundary separating Batman from those he fights.