Tatsuro, who came to Tokyo to look for a job, comes to his son Yota's house until he finds a job. It was Natsumi, the daughter-in-law of my son who was dressed as naked as I was greeted there. Tatsuro was perplexed by Natsumi's unusual lifestyle and how they flirted with each other, but gradually came to like Natsumi's friendly personality and beauty. And Natsumi's luscious voice that leaks out every night awakens the instinct as a "man" in Tatsuro's heart.