Under one roof live a daughter-in-law and her father-in-law. Hidden within their daily lives is a forbidden allure, spreading an insidious and erotic tension. The daughter-in-law's voluptuous body lingers constantly in his sight, and while reason strongly forbids it, an uncontrollable impulse begins to stir deep within his heart. Age means nothing—primal desire strikes fiercely. This longing feels even sharper amidst the monotony of everyday life, as unconscious guilt intertwines with overwhelming lust.