It's not easy to be the craziest psychiatrist in the world, but for Harley Quinn it's no problem! Between his trips with Poison Ivy and his return to the roller derby club, her life on Coney Island seems ideal, but more for a long time because the Joker is back in Harley's life! But this time he promises to be the not-so-loving prince she once fell in love with. Can she believe in her promises again? One thing is sure: the Joker doesn't have any interest in betraying her again