A never-before-seen woodsman mysteriously appears aboard a submarine that's been trapped deep under water for months with an unstable cargo. As the terrified crew make their way through the corridors of the doomed vessel, they find themselves on a voyage into the origins of their darkest fears.
Set in Shizuoka and Tokyo, Japan in the late 1980s. Takkun is a university student in Shizuoka attempting to find a job. Mayu is a dental hygienist. They meet through a blind date and begin to...