Lin Hai, an urban office worker, is suddenly fired and returns to his hometown to inherit a deserted island, awakening the Island Prosperity System. By accelerating time in the surrounding sea, he brings forth all kinds of gigantic marine creatures and teams up with his younger brother, Lin Yang, to launch a livestreaming business on the island. Fishing enthusiasts flock to the island, and giant catches appear one after another. Facing greedy relatives and harassment from outside investors, Lin Hai joins forces with his companions to overcome every crisis, develop the island's tourism industry, and tame adorable mutated marine creatures, gradually transforming the deserted island into a giant-catch empire famous across the internet.