Lin Chen returns to his village to inherit the oyster farm left behind by his father. He initially hopes to build his business in peace, but several elderly villagers, relying on their seniority, constantly make things difficult for him and sabotage his work. Lin Chen remains calm and uses his intelligence and legal means to defend his rights. He not only uncovers the injustice suffered by his father twenty years earlier but also expands the oyster farm into an increasingly successful business. Three years later, Lin Chen establishes an aquaculture cooperative and leads the entire village to prosperity. Rules have always mattered more than seniority.