The story begins in 1971 in Los Angeles. A young Japanese girl looks around her room, and a Christmas tree and a toy rocking horse begin to float and fly around. The little girl claps her hands in delight. However, that night, Mariko is tormented by a nightmare in which a man she doesn't know is shot and killed, causing her to sweat and suffer. Then, all the furniture and toys in the room begin to levitate and move around violently. This is the work of Mariko Sugiura, the little girl who has acquired poltergeist abilities.