Otagawa Minoru and Ejima Chihiro investigate the death of a high school girl. She apparently committed suicide by jumping out of her bedroom window in the high school dormitory. If the incident seems simple at first sight, the superior of Chihiro orders him to look further into the file. After carrying out their little investigation and questioning some high school students, Otagawa and Chihiro begin to take an interest in a mysterious cursed DVD that the victim would have watched before he died. Chihiro will even go so far as to watch this famous DVD too...