Haruko Ashiya and Sota Koshino of "Ashiya Paranormal Investigation" take on a request from an individual plagued by poltergeists in an old, single-family house. By deriving patterns from poltergeist phenomena that have occurred worldwide and devising their own unique countermeasures, the duo confronts the supernatural.

Just when it seemed the phenomena had subsided, the client suddenly vanishes. Furthermore, even the world surrounding Haruko and Koshino begins to be eroded by bizarre occurrences—.