George and Harold are usually responsible kids -- whenever anything bad happens, George and Harold are usually responsible! This time, they accidentally invent an army of terrifying talking toilets. Luckily, they know a superhero with enough snap in his waistband to save the day! This looks like another job for the amazing Captain Underpants!

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.

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

Fourth graders George Beard and Harold Hutchins are a couple of class clowns. The only thing they enjoy more than playing practical jokes is creating their own comic books. And together they've created the greatest superhero in the history of their elementary school: Captain Underpants! His true identity is so secret, even he doesn't know who he is.

"George and Harold love Christmas, but they've decided that the old traditions could use an upgrade. Their solution? Blissmas--a cooler, more modern version of Christmas, including a Mechalition Derby, holi-DJs instead of Christmas carols, lasers instead of twinkle lights, and a totally jacked Santa Claus. But as with all of George and Harold's genius ideas, Blissmas has some unexpected consequences. If they don't act fast, Christmas could be gone...

"No one loves Halloween more than George Beard and Harold Hutchins. Join the two best friends and their superhero pal, Captain Underpants, in this terrifying and totally funny two-story collection! First, George and Harold go teeth-to-teeth against a ghost dentist when their spooky campfire story comes to life! Then, George and Harold have to face a terrifying T.P. mummy after their most epic prank ever goes down the drain. Can Captain Underpants...