Dav Pilkey

"Dog Man is down on his luck, Petey confronts his not so purr-fect past, and Grampa is up to no good. The world is spinning out of control as new villains spill into town. Everything seems dark and full of despair. But hope is not lost. Can the incredible power of love save the day?"--Provided by publisher.

George, Harold, Captain Underpants, and Sulu the bionic hamster battle the three ridiculous Robo-Boogers in an attempt to turn the Bionic Booger Boy back into Melvin Sneedly.

Dragon wakes up groggy and does everything wrong all day long.

Big Dog and Little Dog eat, sleep, go for walks, and get into trouble.

Big Dog and Little Dog get in trouble when they play in the house.

When George and Harold hypnotize their principal into thinking that he is the superhero Captain Underpants, he leads them to the lair of the nefarious Dr. Diaper, where they must defeat his evil robot henchmen.

Dragon has a busy and fun-filled Halloween, turning six small pumpkins into one big jack-o-lantern, going to a costume party, and taking a spooky walk in the woods.

Only Captain Underpants can stop the three evil space aliens who have invaded Jerome Horwitz Elementary School and turned everyone into lunchroom zombie nerds.

Dragon has a merry time in the Christmas season, decorating a tree outdoors, making a chocolate candy wreath, and sharing his Christmas gifts with needy animals.

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.