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.

When Professor Pippy P. Poopypants comes to Jerome Horwitz Elementary School to teach science, and he goes off the deep end because students make fun of his name, only Captain Underpants can save the school from the professor's perilous plot.

George and Harold have really done it this time--they've created a monster! She's faster, smarter, and more evil than anything the world has seen before--she's Wedgie Woman! When Harold and George turn fourth-grade teacher Ms. Ribble into the evil Wedgie Woman, she gives the wedgie of doom to unsuspecting people who stand in her way--including principal-turned-superhero Captain Underpants.

The monstrous Turbo Toilet 2000 is determined to take revenge on George, Harold, and Captain Underpants.

"Legendary storyteller Stephen King goes into the deepest well of his imagination in this spellbinding novel about a seventeen-year-old boy who inherits the keys to a parallel world where good and evil are at war, and the stakes could not be higher--for that world or ours. Charlie Reade looks like a regular high school kid, great at baseball and football, a decent student. But he carries a heavy load. His mom was killed in a hit-and-run accident when...

The Bad Guys, Mr. Wolf, Mr. Shark, Mr. Snake, and Mr. Piranha, want to be heroes, and they decide that the way to do it is to free the 200 dogs in the city dog pound--but their plan soon goes awry.

For centuries there have been rumors of another continent on the dragons' planet -- another land far across the ocean, populated by tribes of dragons very different from those we know. But there's never been any evidence, and most dragons dismissed the rumors as fairy tales. Until now. Because it turns out the stories are true. And the other tribes are coming.

"When we last left our hero, Max Crumbly, he had crash-landed on top of a Mighty Meat Monster pizza after taking a late night tumble through the vents at South Ridge Middle School--and he was completely surrounded by three ruthless criminals! Will Max be shredded to bits like mozzarella cheese on the hard and crunchy pizza crust of doom? Can his friend and sidekick, computer whiz Erin, help get him out of this sticky situation alive?"--Page 4 of cover....

Still yearning to be seen as heroes, Wolf, Shark, Snake, and Piranha set out to rescue ten thousand chickens from a high-tech cage farm--but one unexpected problem is Mr. Snake himself, also known as "The Chicken Swallower."

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.