A widower researcher and three women engage in carnal intercourse! After 30 years of research, researcher Keisuke Taniguchi has finally concluded that "sexual desire has the greatest impact on the human body." To confirm this, he makes appointments with three women of different ages, but the women who appear before him are far more lewd and lascivious than he expected! Watch as these different types of arousing women arch their backs in pleasure, filling the screen with excitement! This is a film that will get the blood flowing between your legs!