In the late winter of 2003, an unexpected car accident made Lin Zhenghong, chairman of the Lin Group, and his wife discover that their daughter Lin Wanxing, whom they had raised for twenty years, was in the wrong arms with a girl from the slums, Su Nianchu. After twenty years of careful care and struggling in the mud, Lin Wanxing suddenly lost balance in front of the word "blood relationship" - Lin Wanxing fell from the clouds, and the fine clothes, fine food, and social aura she was used to collapsed overnight. She tried to hold on to the fragments of the past, but she repeatedly encountered the roughness of her native family and the alienation of her biological parents. Su Nianchu was forced to break into an unfamiliar wealthy family. Faced with the scrutiny of her stepmother Zhao Wanyi, the suspicion of her stepbrother Lin Yuchuan, and the vague hostility of "fake" Lin Wanxing, she gradually discovered that there seemed to be a more complicated secret behind this "mistake" as she adapted carefully. When the Lin Group encounters a crisis, two paternity test reports surface. The pull between birth and upbringing, the game of family affection and interests, the entanglement of love and jealousy, completely involves the lives of the two girls into a whirlpool. They will eventually find their own answer to survival in the hustle and bustle of the floating city.
