The Amazing Adventure in Tovia — Mark Harris

Matt Martin, along with best friend Johnny and Matt's loyal dog Cheetah, wake one morning to find an odd-looking little blue man in their campsite on their favorite remote lake island. When Cheetah gives chase, the little man and Cheetah seemingly disappear by running straight into the face of a rock cliff! The blue man reemerges, telling things too strange to believe. Only one thing seems clear - Cheetah is inside the cliff somehow, and will not be returned until the boys join the little man and the "Tovian Volunteer Army" on a dangerous mission into a mysterious hidden world. The boys, along with Matt's sister Terry and their mother's annoying dog Frankenstein, embark on a fantastic crusade through an alien world populated with bizarre creatures. Along their unreal journey through Tovia, they discover that everything the little blue man had told them was unfortunately true. Worse yet, they learn the many disturbing facts that he had not mentioned! With the unlikely assortment of Tovian creatures at their side, can the boys find a way to defeat the evil force that awaits them? If not, they will never see home again, because earth will be destroyed completely!