After separating from her husband for 15 years, Taiko has dedicated her life to her beloved son without remarrying. One night, she heard moaning coming from her son's room. After catching a glimpse of her beloved son having sex, Taiko was consumed by jealousy more than the joy of seeing her son grow into an adult. From that day on, Taiko's perception of her son changed drastically. Struggling with the boundaries of their parent-child relationship, but unable to suppress her pent-up sexual desires built up over 15 years, Taiko intrudes into the bathroom while her son is taking a bath…
