The Adventures of Ook and Gluk Kung-Fu Cavemen from the Future

Ook, Gluk, and their dinosaur Lily, travel in time to year 2222 AD, they discover that the world of the future is worse. They find a friend in Master Wong, martial arts instructor who trains them, so they may return home and make things right. Lexile 420, Guided Reading Level I, 176 páginas, Tapa Dura , 1x14x19 cms, Dav Pilkey, 5 a 8 años.