Midori, a mother, worries about her son's future as he becomes obsessed with idols. With each passing day, her son's obsession becomes more intense, but her husband doesn't seem to mind, saying "It's fine, nothing special," and only Midori becomes more worried. One day, Midori makes up her mind and takes her son's virginity herself, hoping to show him the charms of real women. At first, her son is hesitant, but he becomes obsessed with the pleasure of sex, and gradually he starts to desire his mother's body, ignoring the idols...