Ha Yun Seo, a confident and respected team leader, works at a large company alongside her younger boyfriend, Seo Ju Won. Unknown to her, Ju Won is the son of the chaebol family running the company. When his mother offers Yun Seo money to end their relationship, Yun Seo, shaped by a harsh past, accepts, believing love is unrealistic. However, Ju Won, driven by his faith in love, refuses to give up and strives to win her back.