Lee Seo-hwan

Man Sik is a single father who raises his 7-year-old daughter Ye Na alone. He has yet to register her birth because he wants her birth certificate to be the same as the other kids, which is to have a mother and father. In order to do so, he offers a deal to a woman from Vietnam: he will pay her 20 million won to put her name on a marriage certificate as his wife and Ye Na's birth certificate as her mother. She declines the offer and Man Sik becomes devastated. Mi Hee then appears.

Ju Yeong is a woman who longs for her ex-boyfriend but doesn't want to accept it. As she ends a short-term relationship with a very obsessive co-worker, her ex-boyfriend suddenly shows up as a new hire that she has to train. However, as rumors spread about her troubled relationship with the two co-workers, she finally realizes it was all her shortcomings that made it this way.