When the end of the school year finally arrives, it's time for the last-day-of-school carnival! But Robot Boy and his friends are forced to run for cover--the ultimate party pooper, Rain Out, has assembled a storm big enough to drench all their fun. Robotics fan Imran always felt at home among machines. Then, he was bitten by an experimental robot designed using nanotechnology. It transformed him into Robot Boy, the most scientifically advanced superhero the town of Poppy Cobbler has ever seen.