Zhou Yi, a young man from the modern era, accidentally travels back to ancient times and becomes a low-ranking county magistrate on the frontier, where he awakens a god-tier supply system. Facing famine, Xiongnu invasions, corrupt officials, and powerful local elites, he wins the people's hearts with a bowl of rice porridge and a sack of fine grain. By strengthening city walls, reforming people's livelihoods, and cultivating talent, he gradually transforms the dilapidated Pingliang County into an earthly paradise. When foreign enemies approach, he outsmarts them and defends the city with strategic brilliance, rising from a humble county magistrate to a legendary figure who shapes the fate of the realm. With the people rallying behind him and heroes joining his cause, an impassioned journey from saving one county to contending for the whole world begins.