Eighteen-year-old Julia and twelve-year-old Alex are just like many other brothers and sisters. They fight ." a lot." Yet something is different in this family. Alex believes his sister has an evil mission-to ruin his life.

One day, Julia backs over Alex's shiny new bike, yet Alex is the one who is punished by his parents for leaving his bike in the driveway. Outraged, Alex officially declares "war" on his sister. He is tired of her unforgiving, cruel, and rude nature and soon discovers the best way to get revenge. Alex finds precisely the right moment and reads a page from Julia's...