When the Joker and Harley Quinn break up, Joker hires a new henchgirl to replace her, whom he names Fake Harley. Fake Harley turns out to be the perfect sidekick, much to real Harley's dismay. She thinks the Joker must be overjoyed to have a competent henchgirl at last. She doesn't know the Joker as well as she thinks.