Uta is a new employee at the company, she is dating Satou, her senior and also her colleague. Because the company prohibits love between employees, the two have to hide their love affair, but that secret was accidentally heard by Uta's department head. Uta's department head is a perverted middle-aged man who likes to sexually harass others. He constantly touches Uta's butt whenever he has the chance, making her feel disgusted and not want to get close to him. But things don't go as she wishes, this time she is assigned to go on a business trip with two superiors, and one of them is the department head she hates so much. After finishing the work, the three of them went drinking together, she ordered a light lemon wine but the department head secretly told the owner to change it to a stronger lemon wine. He also kept giving her alcohol, making her quickly drunk and fall asleep. When she woke up, Uta found herself with the chief's cock in her mouth, her clothes were taken off, revealing her huge breasts and plump pussy! The chief also recorded a video of this scene and threatened to post it online if she didn't obey. But his long, big cock and his skillful skills made Uta climax over and over again, she gradually forgot everything, even when he sent the video of the two fucking to his boyfriend, Uta didn't care, she just wanted to fuck the chief, enjoy the feeling of pleasure he brought...