Fourteen-year-olds Serena and J.T. are headed to Cancun, Mexico. They're not traveling together. Not even on the same plane. In fact, they haven't met. Yet. J.T. can't wait to get started on his long overdue vacation with his dad. It's going to be an awesome week of fun, sun and surf. If his luck holds, he might even meet a nice girl. Serena won't have time for fun. For her, this is no vacation. She's a technologically enhanced spy, and she's hot on the trail of the monster responsible for her parents' death. Her heart is set on revenge.When the die is cast, forces are set in motion that will change their lives and the world they believe in.