Set in the Republican era, Su Shiyi, the Su family's biological daughter, returns to her birth family as an adult after being identified by her birthmark. Kind-hearted and timid by nature, she is repeatedly schemed against by Lin Shanshan, the favored and calculating fake heiress who is the daughter of a servant. Her biased father, Su Mingzhe, favors Lin Shanshan, while the rest of the family treats Su Shiyi with cold indifference. Betrayed by her selfish fiancé, Jiang Che, Su Shiyi ultimately dies with deep resentment. Afterward, the Su family's biological daughter gains a special ability and achieves success.