Kang Jae-ho caused the death of Shin-jeon’s father when Shin-jeon (actor Joo Jin-mo) was a young boy. Ever since his father's death, Shin-jeon thought about getting revenge. After studying abroad in America, Shin-jeon is hired by an American investment firm and is promoted to the position of branch head of their Korean office.In his plot to get revenge, Shin-jeon intentionally approaches Eun-seol, who is Kang Jae-ho's daughter, and uses his charm to win her heart. but Shin-jeon finds himself falling in love with Eun-seol as he gets to know her better. and decides to forgive her dad. As Shin-jeon plans to marry Eun-seol and settle down with her in marital bliss, Eun-seol finds out that Shin-jeon approached her on purpose to get revenge on her father. Angry at being betrayed, Eun-seol begins to devise a plot to turn the tables around on Shin-jeon...