u003cbu003eThe future of all humanity is at stake in the final color installment in this u003ciu003eNew York Times u003c/iu003ebestselling series by Dav Pilkey, the author and illustrator of Dog Man!u003c/bu003eu003cpu003eu003c/pu003eGeorge 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 it turns out there's something rotten in the state of Ohio, and it's smellier than a pile of putrid gym socks. The boys' malicious gym teacher, Mr. Meaner, has created a method of mind control that transforms their fellow students into attentive, obedient, perfect children. Now it's all in George and Harold and Yesterday George and Yesterday Harold's hands!
