A Tokyo schoolgirl named Yoko finds a message on her cell phone coming from her own telephone number dated three days in the future. Listening to the message, she discovers with horror that she’s hearing her own voice, screaming in terror. 72 hours later, Yoko is the victim of a fatal accident.
Her friend Yumi soon realizes that other people in their circle are victims of the same scenario, receiving premonitory telephone messages announcing their death under particularly violent circumstances. Yumi investigates to find out what or who could be causing these strange events.