Batman shows up at Arkham Asylum, where he discovers that the Joker has managed to escape from custody. This dangerous patient was under supervision, but now his functions to entertain the hospital are transferred to another. The one in the role of a clown, not realizing the consequences of what is happening. Joker is free and intends to show others what he is capable of. Those who thought him insane were wrong. The world around has gone mad, and Joker has his own plans and ways to realize them. An amusement park, long out of operation, is bought by a fugitive from the clinic for pennies. This is the first step on the road to the dream. James Gordon becomes the Joker's sidekick. Why him? Gordon represents honor and morality in a Gotham that is rotten to the core....