Kristina Georgia Snow is the perfect daughter, gifted high school junior, quiet, never any trouble. But on a trip to visit her absentee father, Kristina disappears and Bree takes her place. Bree is the exact opposite of Kristina. Through a boy, Bree meets the monster: crank. And what begins as a wild ecstatic ride turns into a struggle through hell for her mind, her soul-- her life.