After barely surviving a violent attack by an elusive serial killer, crime boss Jang Dong-su finds himself forming an unlikely partnership with local detective Jung Tae-seok to catch the sadistic killer simply known as "K".

Ae-Ra is focused on her appearance as she believes it will lead her to a better life. She then meets Jung-Woo who studied engineering. They eventually get married, but they also get divorced. After their divorce, Ae-Ra goes through difficult times. Unlike Ae-Ra though, Jung-Woo becomes a successful IT developer and very wealthy. Now, Ae-Ra tries to seduce Jung-Woo to marry her again.