Sypnosis:

Across Japan, mysterious deaths have been taking place. Reportedly, a cursed video is responsible for these deaths; those who watch it suddenly die. Ayaka Ichijo, an extremely smart graduate student with an IQ of 200, does not believe in such hoaxes. However, when her younger sister happens to watch the cursed video for fun, Ayaka must race against time to try and reveal the mystery of the cursed video.