Myou Mina is devil like sadist.She enjoys inflicting pain on people,and gets pleasure by doing it.She then met Chaeyoung,Mina saw the innocence and purity in her eyes.The lust and desire to destroy Chaeyoung's innocence and claim her everything is too strong for her to resist or ignore.But there's one problem,that prevents her from safely capturing Chaeyoung.The young girl has an older sister,and she is Yoo Jun