Nao and Katsu love each other, and both decide to move towards marriage. Director Ozawa blesses them and agrees to officiate their wedding. After getting married, Nao quits her job and becomes a full-time housewife. However, her mother's company goes bankrupt, and Katsu, as the guarantor, has to bear a huge debt. With no other choice, Katsu reluctantly borrows money from Director Ozawa. He agrees under one condition: that Nao becomes his secretary. After becoming a secretary, Nao and Ozawa are always attached to each other. The curtains are always drawn when they are in the room together. Katsu's suspicions grow, reaching a peak when he sees a condom on Nao's desk! Nao explains that it was just a joke from the director, and the director himself admits to that. With the job going well, Katsu no longer has any doubts and completely trusts his wife. But who would have thought that his own doubts were completely true, Nao was getting the director pregnant day and night in the office right next to him...