Hold onto your pants for this awesome adventure from the author of the million-selling Captain Underpants! Harold and George are back - presenting the sensational saga of two crazy kung-fu caveboys raising hell in 500,001 BC! Ook and Gluk have a pretty great life growing up together in Caveland, Ohio, even though they're always getting into trouble with their short-tempered tribal leader, Big Chief Goppernopper. But the boys' idyllic life takes a turn for the terrible when an evil corporation from the future invades their quiet town... With action, laughs, comic strips and flip-o-rama fun in every chapter, here's excitement aplenty to blow your pants off!

The world's most evil corporation of the future invades Caveland, Ohio and enslaves the inhabitants, until a time portal takes Ook and Gluk to the year 2222, where they find a way to save the day.

Li'l Petey gets caught in some family drama in the eighth Dog Man book from worldwide bestselling author and artist Dav Pilkey.

Fourth graders George Beard and Harold Hutchins invent the wedgie-powered superhero Captain Underpants in the first book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man!

George and Harold's time-traveling Purple Potty lands them in a crazy place in the eighth book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man!

George and Harold's latest prank backfires in the second book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man!

Tippy Tinkletrousers is back in the ninth book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man!

Professor Pippy P. Poopypants takes over science class at Jerome Horwitz Elementary in the fourth book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man!

Alien lunch ladies attack in the third book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man!

George and Harold's nemesis Melvin Sneedly goes from snooty to snotty in the sixth book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man!

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

George and Harold accidentally create a monster in the fifth book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man!

The next great Dog Man adventure from the worldwide bestselling author and artist Dav Pilkey. You'll howl with laughter!

George and Harold have to figure out how to fix history in the tenth book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man!

The Turbo Toilet 2000 returns in the eleventh book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man! Just when you thought it was safe to flush, the Turbo Toilet 2000 strikes back! The carnivorous commode known for devouring everything in its path has built up a real appetite... for REVENGE! Luckily, the fate of humanity is once again in the hands of George and Harold and their annoying nemesis Melvin Sneedly. Will Wedgie Power prevail? Or will the amazing Captain Underpants be flushed away forever?

The 10th Dog Man adventure from the worldwide bestselling author and artist Dav Pilkey. You'll howl with laughter! Dav Pilkey's wildly popular Dog Man series appeals to readers of all ages and explores universally positive themes, including empathy, kindness, persistence, and the importance of doing good.

The 10th Dog Man adventure from the worldwide bestselling author and artist Dav Pilkey. You'll howl with laughter!

From Dav Pilkey, creator of the #1 New York Times bestselling Dog Man and Captain Underpants series, comes Dragon, the heartwarming hero adored by Dav's youngest readers!

The first five books of the popular Captain Underpants series are collected here in a boxed set of heroic adventures and dastardly bad guys.