After Chen Qiang is driven out of the cooperative crab pond by his cousin, bringing only his aquaculture expertise, he leases out the long-abandoned No. 5 pond. Facing challenges such as water shortages, lack of fry, and feed scarcity, he overcomes crises step by step using micro-ecological water conditioning, waste shell calcium supplementation, and the village acquisition method, turning a discarded pond that nobody believed in into a high-yield crab pond. See how a down-and-out young man relies on knowledge, insight, and persistence to make a comeback in rural aquaculture and earn nine million of his own life wealth.