After her husband perished in the vast sea, Shen Haitang struggled to make a living with her two daughters. Her husband's uncles usurped the family property, leaving her only a dilapidated house and a worn-out sampan. To feed her children, she ventured out to sea and rescued a young killer whale, A Mo, trapped in a fishing net. A Mo guided her to precious seafood. Shen Haitang did not blindly rely on the killer whale; with her seafood-gathering experience and business acumen, she controlled harvesting, protected seedlings, and expanded sales channels. She replaced her boats, formed a fleet, and established seafood grading standards. Standing firm against clan property-grabbing, price-cutting competitors, and fraudulent merchants, she upheld her reputation, forged a seafood brand, and grew from an bullied fishing village widow into a fishery leader who led her fellow villagers to prosperity.