Yuma is an ordinary office worker. In her original life plan, it will be to accumulate experience to shine in her career. But in reality, it was not like that, she was just doing some ordinary office work, not accumulating any more experience. Her head of the department, a grumpy, mean person, always scolded her subordinates and looked at her with lewd eyes. Once, the head of the department assigned her an urgent task to complete in a short time. There was no other way, Yuma had to stay and work overtime. At this moment, the head of the department appeared, he knew that she wanted to develop her career, he would help her with a condition... Use your body to serve him! At first, Yuma insisted on disagreeing, but after being stimulated by the head of the department to the sensitive places, enjoying through the pleasure that sex brings, Yuma gradually becomes more lustful. Every day she works overtime, and every day she is helped by the evil head of the department to "advance her career"...