Ollie Morcombe was a top student last year, popular, and a gifted musician. But after the accident, everything changed. Now he's an outsider and the favorite target of the school bullies, who have made his life a living hell. Today—the last day of the school year—he's brought a gift for them: a homemade pipe bomb. What drove this exemplary student to plan such revenge? And with the clock ticking down to the end of the school day, what can be done to stop him?