Young man Cai Jiangtian returns to his hometown to start a business, taking the lead in establishing the Tangtouqing Ecological Crab Farming Cooperative to lead his fellow villagers in developing green river crab aquaculture. Facing multiple unfair competitive suppressions from local aquatic products leader Zhao Hongkun, Cai Jiangtian unites the farmers, relies on scientific aquaculture and excellent product quality, and opens up online and offline sales channels. Everyone works together with one heart to resolve crises time and again, reversing the difficult predicament. The opponent finally recognizes reality and chooses to integrate into the collective, and everyone huddles together for development to jointly build a local aquatic product brand, stepping out on the path of rural common prosperity.