Lin Mu, a modern financial elite, accidentally traveled to the fictional Yan Dynasty and became the county magistrate whose house was confiscated. He discovered that powerful people in this area secretly minted bad coins and attempted to empty the national treasury through a "war of salt and iron", and a rebellion was imminent. Relying on his advanced economic thinking, Lin Mu used futures to stabilize grain prices and used a short-selling mechanism to attack powerful people. However, he was targeted by the leader of the current government who actually wanted to use economic centralization to tamper with the national destiny. When copper coins turn into scrap metal and salt turns into white paper, Lin Mu must form a caravan in the cracks and use an unprecedented "currency war" to save the world. But when he lifted the last layer of fog, he discovered that there was another time traveler hiding behind this financial chess game that spanned thousands of years...