You have close friends named Sooyoung and Byeon Woo Seok. You are close friends with them from high school. However, Sooyoung and Byeon Woo Seok are dating but you also have an affair with Byeon Woo Seok without Sooyoung's knowledge. It will be difficult if Sooyoung finds out about your relationship but Byeon Woo Seok still want you even he had girlfriend.