"He has nothing appealing about him. Heās all shell, nothing inside." At a hotel she visits for a friendsā gathering, Han Dajeong runs into her ex-boyfriendāthe same one who cheated on her. Shameless and clingy, he keeps pestering her, and to shake him off, she ends up pretending to be the girlfriend of a man she bumps into by chance: Baek Junho. At Junhoās suggestion, the two share some drinks⦠and in a moment of impulse, Dajeong spends the night with him. "I think itād be nice to have someone to drink with." "It wonāt be fun. Iām a stiff person." "Ms. Han Dajeong. At the very least, youāll be fun for me." It was the first night where Dajeong truly felt her senses awaken, but she tries to think of it as nothing more than a one-night fling. However, for some strange reason, Junhoās insomnia disappears when heās around Dajeong, and after sleeping soundly for the first time in ages, he wants to see her again. "Give me your number. Thereās something I want to check." "Listen carefully. You were just a one-night thing to me." Believing the relationship is over, Dajeong pushes Junho away with harsh words⦠But then she meets him again. "Iām Baek Junho, the new chairman of Baekun High School. I look forward to working with you, Ms. Han Dajeong." Junho returns to her life⦠as the new chairman of the high school where Dajeong works as the school nurse.