A secret sex movie of Eimi Fukada, Suzuki and Hoshi are lovers, both work in the same company and are engaged. Because he wants to focus on work, Suzuki still doesn’t want to get married, which is often teased by everyone in the company. This time, he and Hoshi go on a trip with everyone in the company as well as practice more professional skills. However, on the first night, the head of the department, Eimi, finds a way to be alone with him, approaches and seduces him! It turns out that the head of the department has always been interested in Suzuki, ever since she found out that he and Hoshi were dating, Eimi has always been jealous and wanted to win him back from his girlfriend. This trip is the best opportunity for Eimi. She continuously seduces Suzuki, fucks him even when his girlfriend and everyone else are nearby. In particular, Eimi even allows him to fuck her naked and ejaculate inside her pussy! Something he can’t do with his current girlfriend…