Atsushi is a college student who helps out at his family's cafe. One day, while his mother is away on a trip, he ends up working at the store with his mother's friend, Miyuki. Atsushi is nervous throughout the day, but Miyuki, feeling free from her controlling husband, is attracted to his pure feelings and ends up inviting him to join her. From that day on, they indulge in each other's pleasures whenever they can find the time, and enjoy each other's pleasures to the fullest. However, their immoral, sensual time together can't last very long...