Lin Chen, a 35-year-old young cadre from the provincial government, was sent to Yunxi County, an underdeveloped county in Jiang Province, as the acting county magistrate. In the complex grassroots political ecology, he adhered to his original intention of serving the people, solved the development dilemma, and started a compliance game with conservative forces and interest chains, and finally led Yunxi to achieve revitalization and complete the story of self-growth. Panoramically presents the realistic picture of county governance in the new era and depicts the persistence, struggle and responsibility of grassroots cadres.