Ha Yun Seo is single and works as a team leader at a large company. She is attractive, has a nice personality, and is respected at her company. When she was younger, she took her younger brother and left her family because of domestic violence. She has now matured into a confident and pragmatic person. Her boyfriend is Seo Ju Won, who is younger than her. He works as a staff member at the same company where Yun Seo works.

To her surprise, Yun Seo learns that her boyfriend is the son of the chaebol family that runs her company. Ju Won's mother then reaches out to Yun Seo to break up with her son and offers her money to do so. Yun Seo believes fairy tales doesn't exist in her world and decides to take the money from his mother and break up with Ju Won. But, Ju Won believes in love and follows his heart faithfully. He tries his best to change Yun Seo's mind.