Toshiaki Nagashima is a biologist who is doing major research on mitochondria. When his beautiful young wife is tragically involved in a car accident which leaves her brain dead, in desperation he steals her liver from her body in order to recieve the mitochondria from it to resurrect his wife from the dead. The killer mitochondria takes the form of his assistant.

Set within a city where parasites rage, the parasites settled into their human hosts and increases their power and sexual desires. Dr. Suzune is a parasite expert who works daily to kill the parasites. A sinister demon organization exists behind the parasites. Dr. Suzune also realizes that her father, who went missing when she was a young child, is somehow connected with the group. Violence and madness awaits for her ...