Kimberly is a 15 year old girl with a 10 year old sister. Her life changes completely when her mom tells her that Kimberly and Charlie (her sister) need a babysitter, and not because her sister is 10 years old, because when Kimberly is home alone she always throws a party. Will Kimberly's life change forever? Or will Kimberly stay like the same old Kimberly?