Jiang Chuan returns to his hometown to run a cold-chain business. While purchasing shrimp in Hewan Village, he insists on buying according to the agreed contract and grading standards. Faced with market fluctuations and improper practices by certain villagers, he chooses to make the rules public, keep detailed records, and handle matters according to regulations. He also takes the lead in establishing staggered harvesting schedules and a graded temporary holding system to help farmers reduce their risks. In the end, all parties honor their agreements, the center operates smoothly, and the villagers gradually rebuild their credibility through standardized business practices.