The 26-year-old {Su Qingyuan} is an aloof professional elite in the eyes of outsiders, but during a physical examination, she learned that she was the wrong real daughter. When she returns to her biological parents' house, what greets her is not warmth, but the calculations of her vicious stepfather {Su Jianhong}, the troubles made by her rebellious stepbrother Su Mingzhe, and the jealousy of Su Yuwei, the coddling fake daughter. What's worse is that her mother-in-law Lin Meilan is full of prejudice against her because of her status as a "real daughter" and finds fault with her everywhere. Although the husband {Lu Zhao} is sunny and considerate, he is caught in a dilemma between his mother and his wife. Faced with a trivial family conflict, {Su Qingyuan} puts away her weakness and fights back hard with a cold attitude: blaming her stepfather, punishing her rebellious stepbrother, exposing the fake daughter's tricks, and unexpectedly forming a "united front" with her mother-in-law, who is also troubled by trivial family matters. When the cold-blooded daughter encounters a conflicted mother-in-law, the mother-in-law and daughter-in-law join forces to deal with all kinds of dissatisfaction and turn the chaotic life into a happy scene.