Cha Eun-jae, an elite office girl, is a woman who overestimates her beauty and intellectual abilities, treating all men as incompetent and petty. Every day, Eun-jae's fantasies are filled with love with men from movies, but the reality is quite different. One day, Cha Eun-jae takes on the responsibility of a women's sanitary napkin advertising agency and meets advertising director Oh Dae-seop. Even the proud Eun-jae gradually begins to succumb to the skillful approaches of the playboy Oh Dae-seop, and finally realizes the love from her fantasies. Furthermore, the sanitary napkin advertisement she was in charge of achieves great success, and Eun-jae gains self-confidence and a sense of accomplishment in everything she does. However, Oh Dae-seop's fiancée suddenly appears, and his advertisement is revealed to be plagiarism, making their relationship develop in a complex and subtle way. Added to this is a model who devoted everything to Oh Dae-seop, who joins them to carry out a revenge plot against him.