President Ozawa is very fond of Ayaka, a secretary who stands out for her beauty even within the company. However, Ayaka and Yusaku, an employee, got married and announced that they would be independent. Ozawa was jealous and put pressure on Yusaku's business partners, causing the company to go bankrupt. Ayaya was having trouble with debt, so Ozawa suggested that she return to work as a secretary. As a "mistress" secretary who loves each other only during working hours that are different from before... As part of the deal, Ozawa steals Ayaka's lustrous lips, and from that day on, the president's office becomes a lustful room filled with pleasure.