This ebook edition includes bonus material about the making of the books, sketches by Dav Pilkey, deleted scenes and more! George Beard and Harold Hutchins present the sensational saga of two silly caveboys named Ook and Gluk. Ook and Gluk have a pretty awesome life growing up together in Caveland, Ohio, in 500,001 BC - even though they're always getting in trouble with their nasty leader, Big Chief Goppernopper. But Ook and Gluk's idyllic life takes a turn for the terrible when an evil corporation from the future invades their quiet town.