After learning of his father’s death, Taeoh returns to Korea—only to encounter unsettling rumors surrounding Kyungseo, a household servant and his first love, after the funeral. Back in the old mansion, encircled by ancient trees, a place he hasn’t seen in years, Taeoh begins to harbor doubts about Kyungseo. At the same time, long-forgotten memories of the past begin to resurface, one by one—quietly, insistently, like ghosts slipping through a crack in the door.