At first glance, an ordinary family, but beneath the surface swirls hidden desire and passion. Within the bonds of family, the mother is an adulterous, lustful figure. Witnessing this, the older brother reaches his breaking point and begins to see his younger brother as a sexual object. Chisato Shoda, the milf mother, teaches her virgin son the pleasures of sex. These acts are not mere expressions of desire, but symbolize a depraved, flesh-driven family love—a taboo hidden behind devotion.