After tragedy strikes their family?? Emily and Navin move with their mother into the old?? mysterious home of their great-grandfather. On their first night in the strange house?? Emily and Navin's mom is kidnapped by a tentacled creature. Determined to rescue her?? Emily and Navin are led into a world of robots?? talking animals?? flying ships?? new friends . . . and enemies. Emily learns that she is a Stonekeeper and essential to the survival of this world?? and that her incredible story is only just beginning.