Plot: Ha Yoon-seo has worked hard her whole life: after raising her younger brother alone, she is now a marketing manager at a credit card company. Her life takes a dramatic turn when she discovers that her boyfriend, Seo Ju-won, is the heir to the family that owns the company! Upon learning of their relationship, Ju-won's mother offers Yoon-seo money to break up with him, and Yoon-seo accepts