To raise money for his critically ill wife's surgery, fisherman Kai Lynn is pushed to the brink when his brother-in-law, Sean Lee, embezzles his profit share. After activating a Holographic Seabed Visualization System, he ventures into The Blacksand Sea to catch rare seafood. Rising from a poor fisherman to the richest man in the seafood industry, he leads his village to prosperity, conquering the national market.