Hannah, a tutor, is lured by a lucrative job offer at an isolated island mansion. In this new role, she encounters Ian, the amiable young owner, Ailee, her upcoming student, and Ian’s younger sister. What starts as a tutor’s promising beginning on the island soon turns puzzling as odd incidents unfold in the supposedly tranquil mansion. As she delves deeper, Hannah unravels the mysterious connection between the siblings and the enigmatic secrets hidden within the island.