Faced with exploitation by her black-hearted uncle Lin Zhenfu over fifty thousand in seafood and a town-wide blockade, Lin Zhen decisively sets up on her own. Bringing her loyal partner A Li, in the desperate situation where her tools are destroyed and diesel cut off, she relies on tide-reading skills to trek into the dangerous dead mudflat, bursting with hauls of prized wild red-roe crab emperors, which provincial aquatic king Su Wanwan rushes to exclusively buy up at high prices. Afterwards, Lin Zhen buys the town's first ironclad ship in full to establish a cooperative; facing her uncle's entrapment and encirclement, she cleverly uses reef time differences to turn the tables and lure the enemy, leading to her uncle's bankruptcy and investigation. Ultimately, Lin Zhen leads a team to conquer the perilous Devil Trench, pulling up a million-dollar heavenly old yellow croaker and ornate rock lobster, becoming the aquatic queen of the fishing village!