After David Hayes died in a car accident, his widow, Karen, and their children, Emily and Navin, move to a house in the little town of Norlen near San Francisco, as Karen hopes that a new location will help them reboot their lives. The house, which has been in her family for years, is large and needs care and attention. As they clean the house, Emily finds a strange amulet in the library where her great-grandfather, Silas Charnon, worked, and puts it on. That night, hearing strange noises, Karen goes to the basement and is kidnapped by a monstrous arachnopod. Emily and Navin follow them into another world to save her.
