Lin Shen, the 32-year-old director of the Reform Office, with a secret obsession to clear his father's name, accidentally came across an old land expropriation case from 20 years ago during a grassroots reform pilot. When the network of interests behind the glass curtain wall surfaced, and when mentors, lovers, and comrades-in-arms stood on the opposite side of fate one after another, he discovered that: beneath the deep currents of officialdom, there was institutional inertia more terrifying than corruption, and a test of faith more piercing than betrayal. On one side is the truth that his father guarded with his life, and on the other side is the success or failure of grassroots reforms and the rebuilding of public trust. Lin Shen must find the balance point between idealism and real politics in the maze of the power game - even if he has to bet his personal future and pay the price of loneliness. This battle over the new political and business relationship is not only related to the fate of a county, but also reflects the original intention and choice of the reformers in the new era: Under the deep current, can the glimmer of light really penetrate the darkness?