Li Menglong, an expert in breeding prized koi, returns to his hometown to start a business and successfully breeds exceptionally valuable koi. When a dispute arises with his neighbor, Aunt Liu, he resolves the conflict rationally while protecting his own rights. With the support of Su Mei, a powerful female CEO, he establishes an aquaculture cooperative, providing villagers with fry and technical guidance and leading the entire village into the koi industry. He leads his team through breeding crises, competes in an international koi competition and wins the championship. Ultimately, he helps transform Qingshan Village into a modern koi industrial park, bringing prosperity to the entire community.