The Forest

The majority of the story is set in and around the Aokigahara Forest, a forest at the northwest base of Mount Fuji in Japan known as a popular destination for suicide. Sara Price, an American woman, receives a phone call from the Japanese police telling her that they think her troubled twin sister Jess is dead, as she was seen going into Aokigahara forest. Despite the concerns of her fiancé, Rob, she journeys to Japan and arrives at the hotel where her sister was staying. Read more on Wikipedia.