"Leon is an ordinary kid who becomes extraordinary when he fights a supervillain to save his school! In the city where Leon lives, superheroes--and supervillains--are commonplace. So how does an ordinary kid like Leon, who has no superpowers himself, become the superhero he wants to be? When all his classmates suddenly become obsessed with a new phone app that turns them into zombies, Leon gets his chance to prove that using his brain and following his heart can save the day"--Provided by publisher.