A modern soul transmigrates into Zhang Sanlang, a low-ranking clerk at the Juancheng County Office. After waking up, he is despised by his own family and, to avoid jeopardizing his fourth younger brother's imperial examinations, he forces a break with his relatives. He protects his son and daughter while calmly fighting for the ancestral home and farmland. With his excellent calligraphy and knowledge of ledgers and the law, he establishes himself in the household accounts department. From a bullied low-ranking clerk to an accomplished auditor, then a senior clerk and finally an office secretary, he rises through the ranks while protecting his children. Along the way, he finds warmth among the neighbors of Ku Jing Alley and love with A Yun. Ultimately, he breaks free from his exploitative birth family, gives his children a stable life, and finally holds his head high.