Lin Mo, a 24-year-old top student in economics, was admitted to the Investment Promotion Bureau of the High-tech Zone of the eastern economically powerful city. He originally thought he would join the hot economic construction front line, but found that he was assigned to sort out ten years of old case files. In a seemingly marginalized position, he relied on his keen knowledge of data and insight into human nature to discover forgotten golden projects from dusty files, and also touched on old wounds and undercurrents buried deep in the fabric of the system. This is a realist masterpiece that focuses on attracting investment and goes deep into the industrial upgrading and government ecology of contemporary China. It tells the story of how a young man with no background protects his original intention and grows up despite the endless waves of light and darkness.