Yuka works as a managing director at her husband's company and is in charge of accounting and training new employees. The company is stable, but the relationship between husband and wife is like that of mere roommates and fellow managers. At that time, a fine young man named Zuo Ci joins the company as a new graduate. While training Zuo Ci, Yuka secretly becomes aroused by his honest and quick-witted nature. One day, when Yuka is forced to go on a business trip in place of her husband, she seizes the opportunity to order Zuo Ci to accompany her, saying, "It will be a good learning experience." But his purpose is not just to train her; he also wants to comfort her aching pussy and satisfy her own desires...