Hell or pleasure, 24-hour sex! Masumi is a selfish housewife who has complete control over both her daily life and sex life. Her appearance exudes pheromones, and one after another men fall for her charm. After she sent her husband off, she imprisons a young man in the attic and spends her days having intense non-stop sex draining every bit of his youthful juices. Eventually, Masumi finds her husband a nuisance, and begins to plot a horrible plan to murder him for the insurance money.