I have no father to call dad. I have no siblings to call brother. I'm a girl with hardly any siblings. The smiling angel Choi Mi So. Even if I'm lonely, I stopped crying when I turned 12. Becasue WooJin Oppa came into my life. However, there is a secret behind her smile. She isn't close with her mother? But is she close with the love of her life, Woo Jin Oppa? Then what about my boss? Yu Ri? Why is my life so difficult and complicated? I'm only 17 years old!!