A film adaptation of the comic book written by Stjepan Šejić which takes place in the Reevesverse (The Batman). Through Harley's eyes we see Gotham City, its heroes and villains, as well as ordinary people. On her way stand the prosecutor Harvey Dent, the police commissioner Jim Gordon and the director of Arkham Asylum Hugo Strange. Above all, the Joker, one of Gotham's most feared criminals.
Young psychiatric doctor Harleen Quinzel is close to finding a cure for the madness haunting Gotham City. But she must first prove her revolutionary theory to skeptical authorities. To do so, she delves into the disturbed minds of Arkham Asylum's most dangerous inmates. He spends more and more time with the criminally insane, and the closer he gets to one of his patients, the further away from reality he becomes.
