TV show host Nami asks her viewers to send in home movies; she receives a snuff film apparently shot at a nearby factory. Taking a camera crew out to investigate, Nami finds the factory deserted. As Nami and her crew begin to scour the factory, they are murdered one-by-one in grisly fashion until only Nami remains. She ultimately discovers that the killer is Hideki, a small, fetus-like man Parasitic twin to his fully grown, naive twin-brother, who seems unaware of the killings.