From Frank Cottrell Boyce--the beloved, award-winning, New York Times-bestselling author of Millions and Cosmic--comes a hilarious, heartbreaking, and completely original middle grade novel about a young boy who turns...green. Rory Rooney likes to be prepared for anything. That sort of planning pays off when you´re the smallest kid in your class. Rory is even prepared (mostly) for Tommy-Lee, his nemesis, who starts most days by throwing Rory out of the back of the school bus. Don´t be scared, his favorite book says, be prepared. And Rory aims to be. What´s more heroic than that? But Rory isn´t prepared when he suddenly and inexplicably turns green and finds himself stuck in an experimental hospital ward. The doctors are just as baffled as Rory is, and that´s when he begins to wonder: What if this isn´t caused by his genes, or a virus, or something he ate? What if it´s something even more extraordinary? After all, more than a few superheroes´ careers began when they turned green. Could this be a sign that he´s meant for something greater? Rory is going to find out--and that´s going to start with escaping from the hospital.