Yun-seo and Joo-won have been dating for a year and a half, but they don't know that he is the youngest son of the AL Group family.Under the request of Zhu Yuan's mother and the temptation of money, Yun Rui decided to break up with him.To keep her promise, she tries to break up by gradually making him hate her.She unknowingly called him when she was drunk and broke up with him.