When her husband's company was bought out due to its debts, his wife Sei ended up working as a secretary for the company's president, Ozawa. Ozawa appreciated Sei's abilities, but more than that, he wanted to own the beautiful Sei. And so, right next to her husband who works there, Ozawa begins to desire Sei. In the president's office, Hijiri's tongue wriggles like a living thing, and as he caresses her passionately, crawling all over her body, Sei's sense of chastity gradually fades away, and she becomes addicted to obscene sex with Ozawa...