Dr. Yoshinaga is researching a therapeutic drug. There were people who were rampaging to steal the research. Finally, they began to target Mayumi, who is Yoshinaga's wife, as they grew impatient with Yoshinaga, who wouldn't listen to them. Her plump body is tightly bound, and the married woman with a strong sense of chastity trembles in shame. The men who know the woman's weaknesses push her to the limit. She is dragged into a devilish pleasure that she had never felt with her husband.