Masuoka (played by cult filmmaker Shinya Tsukamoto, director of Tetsuo and star of Ichi The Killer), is a solitary cameraman obsessed with the desire to understand fear. He watches grisly footage of a man committing suicide in the subway, and desperate to understand the madmans intentions, Masuoka returns to the scene inadvertently opening a door into a bizarre and horrifying underworld. Here among the ghosts and creatures he finds a strange and beautiful mute girl. After kidnapping her, Masuoka discovers evidence of a chillingly inhuman nature and realizes he has discovered a truth too frightening to be real.