
In the twelfth and final installment of the beloved Captain Underpants series, George and Harold, along with their 'Yesterday' doubles, face their most formidable foe yet: Mr. Meaner, their gym teacher, who has developed a mind-control method to create perfectly obedient students. This leads to a chaotic adventure involving time travel, adult versions of themselves, and the transformation of Mr. Meaner into the enormous, malodorous Sir Stinks-A-Lot. The book is packed with Dav Pilkey's signature slapstick humor, comic book interludes, and 'Flip-O-Rama' action. It subtly introduces LGBTQ+ representation through Harold's future, praised for its unostentatious inclusion, making it a significant read for its entertainment value and progressive themes.
George and Harold and their doubles, Yesterday George and Yesterday Harold, have been taking turns going to school, but when the doubles fall prey to their gym teacher, Mr. Meaner, and his method of mind control that turns students into attentive, obedient, perfect children, it is up to original George and Harold to strike back.