She was an ordinary Arkham Asylum psychiatrist; until he twisted her mind. He was a heartless, homicidal, psychopathic clown; until she gave him a heart. They call him a criminal, a murderer and a psycho; she calls him Puddin' and Mistah J. They call her his hired help, his toy that he'll soon get tired of, a nutcase who was foolish enough to believe that he knew how to love; he calls her Harley-girl and Sweets. She says he's the love of her life but he's not quite sure what she is. He has his henchmen and she has a suicide squad. Others call it a recipe for disaster but they call it their 'mad love' He is the Joker and she is Harley Quinn: This is their story.