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