The Jiang family of the capital finds back their true daughter Jiang Nanxing, yet by a twist of fate makes her live a bitter life of carrying cement and eating leftovers. Faced with campus bullying, her adopted sister being cheated, and rumors spread about the fake daughter, she puts up a stubborn and face-saving front, yet protects her own to the very end, relying on experience accumulated in the building materials warehouse to expose the Zhao family's conspiracy of swapping inferior materials and manipulating public opinion. Afterward, she and her sister Jiang Nianqiu join hands to participate in the supply chain innovation competition, fighting back against plagiarism and framed plots to win the championship. Faced with capital acquisition, engineering supply cutoff, and commercial forgery, she insists on not relying on family privileges, taking her sister to check goods, verify accounts, and chase the truth, ultimately toppling the Zhao family and Shenghua Capital, stepping out on her own career path.