Su Fan ventures fearlessly into the perilous Fire-Ridge Sea and catches a prized Red Flame Lobster, only to have the fishing tyrant Qiu Wanhai seize the money meant for his mother's life-saving treatment. With no way out, Su Fan reveals an ancient map passed down through his family, takes his battered boat, and charges straight into the forbidden Molten Abyss! Dodging schemes and standing by his principles, he catches one incredibly valuable sea treasure after another. Teaming up with merchant Wen Yutang, he gathers irrefutable evidence and brings down the tyrant. After successfully saving his mother, he establishes a fair cold-chain distribution system and transforms the fishing harbor. Guided by the ancient map, he then ventures into the deep sea to uncover the mysterious ruins of the Sea Emperor, forging a tough and honorable path to survival as a guardian of the sea!