Introduction: She, a kind, beautiful and willful girl, agreed to go to Shanghai alone with her father in order to find her brother who gave her a half-moon necklace. He was the brother who gave him a half-moon necklace, and he entered the entertainment industry to find her. His parents died when he was young, and because of her appearance, Sunshine swore to protect her for life. He was a playboy but fell in love with her at first sight. He was her good friend and also had a crush on her. What interesting things will happen to her and them? How does she choose in the face of family, love, friendship and legal principles?