Since the father is always working late and rarely at home, Shou, a college student, gradually begins to see his mother not just as family but as a woman. Before he realizes it, he starts subconsciously viewing her as a female deep within his heart. Though he blames himself at times, his emotions eventually become uncontrollable, leading him to cross the line with his mother. At first, she resists, but since she's had almost no intimacy with her husband, the moment she feels her son's passion, she awakens once again as a woman. Now, she has become completely submissive, a sex slave to her own son.