Crashing off the road on a snowy night, David is trapped in the car as it rocks on the edge of a cliff. He orders Karen and Emily to let go of him, and back away to safety. Once they do, the car plunges, carrying him to his death.
Emily, Navin, and Mom take over the home of long-missing great-grandfather Silas; there Emily finds a strange amulet. They pass into a strange and dangerous world where the mother is seized by a weird beast. Guided by the amulet, which she does not fully trust, Emily finds Silas, who passes the amulet and its power to her even as he dies, making her a Stonekeeper. Aided by Silas's robotic followers, they rescue the comatose mother. To do so Emily uses her amulet to blast a hostile Stonekeeper, the Elf Prince. They set out to find aid for Mom, using Silas's mobile house.