Three years since retiring from teaching, Ryutaro has been living happily with his son and daughter-in-law. One sleepless night, he notices his daughter-in-law's sultry voice coming from the other side of the door and catches her in the act of masturbation. Realizing this, Anzu, who hasn't had sex for over three years due to her husband's infidelity, begins to see her father-in-law as a sexual object. How will their relationship unfold? Can he resist Anzu's seductions, exuding mature allure…?
