Modern youth Jiang Feng accidentally time-travels to Daxing, and upon waking up is dragged to the execution ground because his grandfather was involved in a corruption case. Surviving death by a hair's breadth, he is exiled to Chizhou with his family. Relying on modern knowledge and a sharp mind, from making ice, writing books, and auditing accounts to break deadlocks, to escorting prisoner exchanges and fighting the epidemic with cowpox, he defuses crises all the way, makes close friends, and reaps romance. In the end, the Jiang family's name is cleared, and Jiang Feng returns to the capital with merits, officially stepping into the even more perilous court political storms.