Young Wang Jianhua returns to his hometown and leases a fish pond. After three years of diligent farming, he has raised 80,000 jin of grass carp. All permits, water sources, and road arrangements are in order, and his business operates in compliance with regulations. His father-in-law, driven by selfish motives, joins forces with villagers to try to force him to sell his fish at a lower price, threatening him over water access and road use while creating one obstacle after another. Calm and restrained, Jianhua preserves complete evidence and relies on the local judicial office, water conservancy authorities, fisheries stations, and other departments to resolve disputes through proper legal channels and protect his rights. After seeing the truth, his wife chooses to stand by her husband and actively works to mend their differences. In the end, Jianhua successfully sells his fish at a high price, recoups his investment, puts past conflicts behind him, and leases a new pond with flowing water to build his business in earnest.