Hanna Marin goes after what she wants. The more forbidden it is, the better -- whether it's a pair of designer sunglasses, junk food, or her chastity-pledging boyfriend's virtue. Rosewood High's "It" girl is an expert at creating the façade of the perfect life. What would people say if they knew about her run-in with the law? Today Hanna rules the school, but "A's" mysterious messages are unsettling. How easy would it be to topple Hanna's reign, and just how far would she go to save it?