He Huanhuan has a cheerful and straightforward personality. An accident brings her into a book, making her the long-lost biological daughter of the Gu family. With a calm mindset, she calmly handles all kinds of minor matters. She also meets Han Mo, who has been deeply involved in the business world for years and is used to socializing. At first, he finds it hard to adapt to this engagement when seeing the uniquely styled and distinct-personality He Huanhuan. But through long companionship and interaction, the cold and introverted Han Mo is gradually touched by her sincere and open personality, and the two slowly develop a deep bond.