The story follows 19-year-old newlywed Minami and her unexpected relationship with an older man. What started as a simple way to earn some extra money turns serious as the older man's skilled techniques gradually make her more and more aroused, shifting her emotions deeply. Minami may find herself no longer satisfied with her husband alone. The film portrays the intertwining of youthful innocence and the older man's warmth, giving rise to new, complex feelings.