Hidden in a quiet apartment complex, a former assistant professor at a pharmaceutical university lurks in his room, secretly concocting an anesthetic gas. This gas paralyzes motor functions, rendering victims unconscious with eyes wide open, leaving no memory of the incident. One after another, the young women living in neighboring units fall victim to his cunning trap, leading to a series of tragedies. Meanwhile, the savage madness of beasts attacking a wealthy family further intensifies the terror.