Poor mason Liang Mancang is heartlessly kicked out of the house by his uncle and left destitute and helpless. At a time when he is down and out, he unexpectedly digs up a golden-scaled fish hidden by his late father, getting three hundred thousand in huge cash after selling it. He uses this as his starting capital, builds a new house to propose to his sweetheart Su Xiaohe, and during this period, his uncle's family repeatedly comes up with greedy schemes, all of which are resolved and defeated by him one by one. In the end, relying on his honest character and long-term vision, he cooperates with out-of-town merchants to open an aquaculture base, not only achieving his own counterattack to wealth, but also leading all the villagers to increase their income, forging a new path of common prosperity.