Description：Sarah Puth (Natalie Dormer), who lives in the United States, has been restless in recent days. She has a twin sister, Jesse (Natalie Dormer), who works as a foreign teacher in Japan. However, Jesse's whereabouts suddenly became unknown. Sarah asked the Yamanashi Prefecture police to help search, and the final result was that Jesse might have entered the Aokigahara Forest, known as the "suicide resort", to commit suicide. Sarah absolutely did not agree with the police's speculation. She ignored her boyfriend's obstruction and embarked on a journey to Japan alone. She first came to the school where her sister taught, and after the investigation failed, she took the train to Aokigahara Forest. The dissuasion of others could not stop Sarah, and she walked into the depths of the forest. In the process, terrifying and weird experiences alternately attacked her.