Chiharu is still a newcomer at the company. She goes on a business trip to Nagoya with her respected supervisor, the section chief. However, she makes a mistake by booking only one hotel room. Reluctantly, they have to stay in the same room together. "I trust the section chief," she says, but the section chief becomes aroused by the sleeping Chiharu and attacks her... While she sleeps, a video is taken without her consent and used to blackmail her, forcing her to accept her boss's large penis. Disappointed by her once-respected supervisor, morning comes but she is repeatedly attacked... As she gets caught up in the charm of it, the new graduate Chiharu finds herself trapped by the large penis...