49-year-old Mitsuko (pseudonym) is a divorced milf with one child. She married at 20 and had a child soon after, but divorced at 30 due to her husband's gambling addiction. Since then, she has worked live-in at a hot spring inn, transitioning from a maid to a companion. "People often tell me I have the type of charm that suits being a mistress," she says. Even after switching careers to become a caddy, her relationships with men continued. Now past the midpoint of her life, she still wishes to cherish her allure as a woman. Tonight, she meets a man for the first time on a trip and surrenders her body to him, losing track of time as they indulge in pleasure. Drunk on alcohol and emotion, her body burns with desire as she devotes herself to a fleeting romance. The sensual charm and magnetism of this mature woman herald the beginning of a new love affair.