The drama is adapted from Ruohua Ranran's workplace novel "Su Xiao's War". It is set in the construction industry and unfolds the plot closely around the thread of career advancement and counterattack. It tells the story of cost engineer Su Xiao (played by Sun Li) who was forced to resign due to the partner's shirking of responsibility. By chance, he entered Tiancheng Construction, a subsidiary of Yinghai Group. In the high-pressure and meticulous cost work, even in the face of undercurrents within the company and the strong challenge of Tianke Construction economist Xia Ming (played by Mark Chao), he still adhered to the professional belief that "the cleanliness of the cost sheet is the cleanliness of the project", stood out in fierce bidding again and again, and experienced the experience and baptism of the workplace in repeated battles of wits and courage, and finally ushered in the highlight moment of his career and a new understanding of his life ideals.