The appeal of the unknown is undeniable and freshman Mai Taniyama is hooked. But her love for the telling of ghost stories seems to have unleashed a plague of spirits upon her school, drawing both mystical and scientific investigators to the campus in an effort to separate truth from hearsay. The most enigmatic of them all, Kazuya "Naru" Shibuya of the Shibuya Psychic Research team, enlists Mai to aid in his research after an accident lands her predecessor in the hospital. Within the oldest halls of the school, death awaits. And when a student gets attacked, it is apparent that the darkest corners are not truly empty.

A school is held captive by death and fear, supposed ghosts lashing out at the living. Some claim that no spirits drift among the students. But when the principal joins the ranks of those victimized, everyone must agree that something strange is going on. An exorcism begins under the watch of skeptics and believers alike. Perhaps a poltergeist? A soul left behind by suicide? As the walls of the old school begin to rattle and shake, Mai herself falls prey to the invisible scourge.

The investigation of the haunted school continues and the casualties are stacking up. Yet Naru has vanished, leaving the other members of the research team to fend for themselves. When he reappears, a complicated test is administered to those gathered, seeking reasons for the unreasonable trembling of walls and moving furniture. The results prove that all is not what it seems. There is more to the mystical than ghosts and spirits. As the case wraps, Naru enlists Mai to work part-time for the SPR team.

Restless spooks often flock to children, and as the SPR checks in on their newest case they encounter a young girl at the center of a spiritual storm. Furniture is moving unassisted. Flames erupt from kitchen appliances. This particular haunting is one of aggression and anger. As the little girl clutches to her doll, Minnie, for security, the cleansing rituals begin. Legend tells that such toys were created as vessels for souls, but even the creepiest of old tales can't prepare the team for the horrors at hand.

All signs point to a doll as the source of the evil that surrounds a frightened family. The spirit which possesses the toy is cruel and jealous, reacting harshly as her child mistress reveals the secrets of their supernatural bond. When a ceremonial fire fails to destroy the doll, fear drives the little girl to real danger and calamity. And as the family unravels, Naru looks into the twisted history of their home. Death has been a consistent visitor within its walls, the moans of departed children filling the air.

Minnie's vengeance has shaken all who have seen. A specter appears amid a horrible chorus of pain and fear, begging the name… Tomiko… Tomiko. A wisp of smoke wraps like murderous fingers around Mai's throat as a secret well is revealed beneath the floor, the soul of a woman hidden deep within, a maternal siren to the spirits of dead children. Naru has a plan, but it is a controversial one. If there is to be peace for the haunted family and the departed as well, the light of love will have to shine into the depth of darkness.