Teacher Shunsuke Kobayashi visits the Saeki household but finds his student, the young
Toshio Saeki, alone. He finds the corpse of
Kayako Saeki hidden in the attic and receives a phone call from her husband
Takeo Saeki who reveals he has killed Kobayashi's pregnant wife Manami and butchered her unborn child, believing Kayako was being unfaithful upon discovering she has an obsessive crush on Kobayashi. Kayako's body rises as an
Onryō and kills Kobayashi, before tracking down and killing the rampaging Takeo. Sometime later, a woman named Kyoko helps her brother Tatsuya, a real estate agent, to examine the Saeki house and put it on the market. They sell the house to Yoshimi and Hiroshi Kitada but Yoshimi is possessed by Kayako after receiving anonymous mail from her and Toshio. Kyoko sees a possessed Yoshimi staring at her one day, prompting her to leave and visit her nephew Nobuyuki, who lives in the apartment once owned by the Kobayashis. They witness a vision of Takeo murdering Manami and are affected by the Saeki curse. Tatsuya moves them to his parents' house in the countryside, where Kyoko is seemingly possessed and rocks back and forth with a baby whilst Nobuyuki has become mute. Convinced the Saeki house's curse is responsible, Tatsuya heads off to investigate. Meanwhile, Yoshimi murders her husband by bludgeoning him with a
frying pan and kills Tatsuya when he visits. All of Tatsuya's relatives, except Nobuyuki, subsequently perish from the curse. Around a month later, detectives Kamio and Iizuka observe Nobuyuki, who is still mute. Both visit police officer Yoshikawa, who has been driven insane by his investigation of the deaths surrounding the Saeki house. After the visiting detectives leave, Kayako appears in Yoshikawa's home and kills both him and his wife. At the police station, Kamio gets frightened when he sees Kayako, alerting Iizuka and another female officer who go to check his office. Kamio remains outside out of fear but Kayako reappears and kills him. At school, Nobuyuki spots Kayako outside the window, who suddenly crawls through it. Nobuyuki tries to hide in a nearby science lab but is killed and turned into an onryō by two Kayakos. An army of Kayakos is also seen outside; some scratch the windows of the lab whilst others stand outside in the rain emitting the death rattle while rocking left and right in the school yard. Meanwhile, three schoolgirls named "Saori", "Chiaki", and "Ayano" visit the now-abandoned Saeki house on a dare and drink from a bottle of sake lying around, finding that it tastes horrible. In the end, as they explore the second floor,
they notice something bad has happened inside the attic. ==Cast==