Son Se Rin

Man Sik is a single father who raises his 7-years-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.

To support her family and pay off her mother’s debt, Eun-Soo (Lee Ha-Na) works at a dentist clinic during the day and part-time work at night. She is 36-years-old and still single. She hopes to one day live her life for herself and not her family. The time to achieve her dream comes and she finishes paying off the loan. Something happens though.