Miyuki, a beautiful mature woman, sits at the bar counter. A younger man in a suit, Miura, approaches. Miura falls in love at first sight with the fashionable and picturesque Miyuki, and the two get along well and try to have sex at a hotel. However, Miura notices that Miyuki is frightened and does not proceed. Then, six months later, Miyuki, who works as a cleaner at a certain company, and Miura, an employee, meet again by chance. The two finally cross the line. Since then, they have been secretly meeting until her husband returns home at 5pm...