Kana worries because her son Yuma has recently become withdrawn, though her husband dismisses it as ordinary growing pains. Her fears are confirmed when she witnesses Yuma being bullied by delinquent adult classmates in this adult role-play. Terrified but determined to protect him, she confronts them—only to become their next target. No amount of pleading wins forgiveness, and from that day onward she is trapped in seemingly endless gangbanging and repeated creampies.