In a city plagued by rampant parasites, these creatures embed themselves in human hosts, amplifying their strength and sexual urges. Dr. Suzune, a specialist in parasitology, dedicates her life to eradicating these parasites. However, lurking in the shadows is a malevolent organization linked to the parasites. Dr. Suzune discovers that her long-lost father, who disappeared during her childhood, has ties to this sinister group. She is about to face a world filled with violence and insanity…