CAPTAIN UNDERPANTS returns for a twelfth adventure in this highly illustrated comic book style series! George and Harold and their doubles Yesterday George and Yesterday Harold have a good thing going. Two of them go to school while the other two hide in the tree house and play video games all day -- then they switch! But when their malicious gym teacher Mr. Meaner creates a method of mind-control that turns their fellow students into attentive obedient perfect children the future of all humanity will be in George and Harolds hands!
