The outcast four year-old girl Nagi does not have friends and is bullied at the Yuki kindergarten. She misses her mother and is raised by her aunt, the student of psychology Fûko Andô, who is the sister of Takanori Andô that works at the Asakawa General Hospital.
There are weird deaths in Tokyo and Nagi makes drawings of the crime scenes before the happenings. Fûko is concerned with the creepy drawings and shows them to her professor. However she tells that Fûko shall not worry since she is projecting her own feelings on the drawings since her mother committed suicide.
Meanwhile the police inspector Kakiuchi seeks out Mr. Koiso that tells him that the responsible for the deaths is Sadako and Akane Ayukawa, who was possessed by Sadako. Nagi continues to make drawings showing the deaths and Fûko is scared. She brings Nagi to a session with her professor and Nagi scares the psychologist, but she does not disclose her feelings to her student.
Fûko tells her fears about Nagi to her brother and asks him if Nagi is his daughter with Akane but he does not reply the question. Kakiuchi meets Takanori and asks questions about Akane and Nagi. Meanwhile Fûko visits the criminal Seiji Kashiwada in the prison and finds the truth about Nagi.
When Fûko meets Takanori, he reveals that Akane is alive but in coma and holding Sadako in her body. Fûko meets Nagi and the girl asks to see her mother. What will Fûko do?