Having obtained a new virus capable of transforming humans into sex beasts, Hirayama abducts even his former superior, Dr. Minami. Madoka, the doctor's daughter, infiltrates Hirayama's hideout as a genetic human to stop her father's rampage and save the world from crisis. However, she becomes caught in an unexpected turn of events, subjected to torture and sexual abuse in a cold, dark basement. As her feral, beast-like father hunts her down, terror and dread spiral out of control.