Wife and mother Miya, neglected by her husband, trembles with loneliness. One day, while preparing dinner, her pent-up desires overwhelm her and she begins masturbating. Suddenly, her eldest son Atsushi appears and she attacks him with lust, indulging in forbidden pleasure. Yet Atsushi alone isn't enough to satisfy her—she soon reaches out to her younger son Souta as well. Miya's uncontrollable desire transcends family bonds, plunging deeper and deeper into overwhelming ecstasy.