Every day at 2 PM, Asami would masturbate in the living room, driven by mounting sexual frustration. But her son Shingo wasn't the only one who knew about her habit. Shingo told his nephew Satoru about it. Satoru asked Shingo to secretly film Asami, which he did. Using the footage, Satoru began seducing Asami. Though she resists, she gradually finds her emotions stirred. Meanwhile, Shingo, having witnessed his mother's lewd behavior, becomes emotionally shaken as well.