Ai, who attends a girls' school in Tokyo, spends her student life with her classmates from middle school, Fuyumi, Chiharu, Akiko and Yoko. One day, a chain mail called "murder net" arrives on Ai's mobile phone. According to rumors, "You can kill someone by including the name of the person you want...
Members of a university film circle arrive on an uninhabited island for filming. The two-day shooting went successfully as planned, however the pick-up that should have come did not. A few days later, one of the crew members is found dead.
