Jenny, seventeen, moves to small-town New Mexico with her father after police nearly discover she is an arsonist but her urge to start fires persists, and she konws she is being watched.

In the mid-1950s, Yggdrasil Birnbaum and her friends, Seamus and Neddie, journey to Old New Hackensack, which is on another plane, to try to learn why ghosts are disappearing from the Birnbaum's hotel and other Hollywood, California, locations.