Lee Yoori, an employee in the human resources team of EG Department Store, and Lee Yool, the youngest daughter of the Chairman of EG Group, had a terrible accident when they fell from the 10th floor of a building. When Lee Yoori woke up, she realized she had switched bodies with Lee Yool.
However, despite being put in this difficult situation, Lee Yoori still believes that one day their bodies will return to the way they were before. Meanwhile, Lee Yool is living the life of a rich girl, preparing for her upcoming marriage.
The challenge before Lee Yoori is to overcome all obstacles in adapting to her new life as a rich girl. She faced criticism, jealousy from society and difficulties in getting used to this new life and role. Will Lee Yoori successfully overcome all obstacles and regain her normal life as before the accident?