Anubis House is a residence at an boarding school that students begin settling in for the academic year only to find one student missing, a secret panel in the house’s attic, codes leading to backroom staircases, clandestine rituals, and more. Nina Martin moves into Anubis House in England, another resident named Joy Mercer, suddenly disappears without a warning and the school staff eliminate all trace of Joy;;;s existence from the school.