Now not everyone has an unusual love life like the young, promising psychiatrist Doctor Harleen Quinzel. She was assigned to Arkham Asylum in hope of curing ones insanity. However after being assigned to Clown Prince the young doctor became hopelessly obsessed with the crazed criminal's mind. Sensing opportunity, the Joker manipulated her, driving his therapist so mad that he could control her. Harleen fell in love with the villain and broke him out of Arkham in knowing that she was 'helping' her new lover. She devoted her life to making him happy and helping him to spread his bloody brand of mayhem. But Harleen's life was about turn twisted when Batman got in between her Puddin.