Harleen Frances Quinzell has just moved from a small town to the big city of Gotham. She goes to her new high school and meets her new best friends Pamela Isley and Selena Kyle. She then meets her new love intrastate, Jack Napier.
She then joins the Villains group and causes trouble with her new friends. After a while the school takes half of the grade and transfers them into Arkham High School for the criminally insane.