While studying abroad in Russia, Lily was scouted by her husband, Shinichi, who came for business and decided to work with him. While learning Japanese from Shinichi, the distance between the two became shorter and they got married. After three years of happy days, one day her husband was deceived by a friend who was a partner and incurred a large amount of debt. For her husband, Lily decides to work as a secretary at Abe's company. However, the only way to make up for her husband's debt is to accept Abe's "mistress secretary," who also has a physical relationship.