The drama is adapted from the webtoon of the same name. It is a romantic comedy about an ordinary woman who prioritizes protecting herself and a third-generation chaebol man who believes that protecting love is protecting himself. Shin Hyun-bin plays Ha Yoon-seo, who never loses confidence at any time and in any place with her ability. She is beautiful and has a good personality. She is a strong worker who can make money but cannot fall in love. She is the section chief of the brand marketing team of a credit card company. Moon Sang-min plays Seo Joo-won, who has good looks, a good figure, wealth, and a gentle personality. Although he is a new employee in Ha Yoon-seo's team, his mother is actually the president of the company. He is an employee wearing the mask of a third-generation chaebol.