Sadako 

At a high school where Akana Aikawa works as a teacher, a rumor exists of a video. The video is purported to show someone committing suicide. Then Akane Aikawa's student Noriko kills herself. During that time, more suspicious deaths occur one after another. The police concludes that the deaths are suicides. What the police miss is that a key element exists in all of the students' deaths. All of them watched a video before they died. Akane Aikawa now holds the key to the revival of Sadako and must defeat her once and for all ...