The first meeting, she was caught smoking cigarette by the person she hated. The second time, the same thing happened again, but she accidentally... kissed him. "Your secret that you don't want anyone to know. I'm taking advantage of it." A girl who is tired of pretending to be good and a guy who is known as a bad boy will have a secret relationship for a month. This is a love story about two pretenders who begin a relationship and hide it from others.