Zhou Hang poured all his savings into buying a boat, partnering with his childhood friend Sun Peng to run a seafood business. Just as they signed a 350,000 supply contract with Binhai International Hotel, Sun Peng colluded with the crew to demand 70% of the profits. When refused, he spread rumors so that no one in the fishing port dared to go out to sea with Zhou Hang. Tang Xiaoyu, a fisherwoman, showed no fear of threats and boarded the boat to help him. Relying on his self-developed Deep Blue AI fish finder, his maiden voyage caught precious seafood. Sun Peng grew envious and drove a speedboat to scatter the fish school. Risking danger, Zhou Hang sailed into the perilous Devil's Reef, where the AI locked onto a school of bluefin tuna, harvesting eighteen live fish in a single net and selling them to hotel general manager Bai Lu for 6 million, resolving the crisis. Sun Peng chased them into the reefs and suffered a shipwreck, and through these perils, he and Tang Xiaoyu developed mutual feelings for each other.