Stonekeeper

Graphic novel star Kazu Kibuishi creates a world of terrible, man-eating \n demons, a mechanical rabbit, a giant robot---and two ordinary \n children on a life-or-death mission. After the tragic death \n of their father, Emily and Navin move with their mother to the home \n of her deceased great-grandfather, but the strange house proves \n to be dangerous. Before long, a sinister creature lures the kids' \n mom through a door in the basement. Em and Navin, desperate not \n to lose her, follow her into an underground world inhabited by \n demons, robots, and talking animals. Eventually, they enlist the \n help of a small mechanical rabbit named Miskit. Together with Miskit, \n they face the most terrifying monster of all, and Em finally \n has the chance to save someone she loves. \n