Ayane lost her husband in an accident and raised her daughter alone until she got married. Then, unable to bear the sight of her living alone, her daughter and her husband moved in next door... There, she finds out that her husband, Takuto, is sexless and masturbates every night. Ayane has been faithful since her husband died, but she can't control her reason when she sees his big dick... She devours his cock at all hours of the day and indulges in his ejaculation whenever she has free time. Meanwhile, Takuto's carnal stepmother's relentless caresses are tormenting his body and mind...