Captain Underpants and the Really Radical Return of the Waistband Warrior

Captain Underpants and the Really Radical Return of the Waistband Warrior is an unexpected revamp of the Captain Underpants series which was supposed to end with book 10. But the popularity of the series caused a volume of 10 more books. This is the first of the second volume.

Plot
George and Harold and the others at Jerome Horwitz Elementary haven't seen Captain Underpants since book number ten. But one day, Ms. Ribble announces to the school she is getting married to the new music teacher, Mr. Maxwellson. That day, George and Harold make a comic book to give Ms. Ribble called "The Bride of Timmy the Talking Toilet". Ms. Ribble reads it, but since she turned good at the end of book number five, instead of being enraged by how inappropriate it is she just laughs and puts it in her folder of comic books George and Harold made for her. That next day, a spaceship sent to take photos of Uranus discover a bunch of evil-looking toilets as well as the remains of a giant robot plumber that looks like it has just been aten by the toilets. The toilets and their leader, the Turbo-Toilet 2000, leap onto the ship and destroy it, crashing it back to Earth. On Earth, the toilets attack the school, and George and Harold escape. The two boys make it to their treehouse, where they are suddenly attacked by Deputy Doo-Doo and Petey The Evil Cat, who were somehow brought to life thanks to the Patsy 2000 copying machine. Luckily, Super Diaper Baby, Diaper Dog, and Dog Man also appear. Super Diaper Baby and Diaper Dog K.O. Deputy Doo-Doo and throw him into a river, while Dog Man chases off Petey. Super Diaper Baby tells George and Harold that a weird old guy put some comics into the copying machine, bringing all the characters to life... including 5 of the heroes. Diaper Dog then explains the other 2 were Ook and Gluk, but they were kidnapped by some robot guys. More to be added...