Back in the year 2000, Wu Sui is poor and looked down upon by his older brother and sister-in-law. His wife and daughter are nearly driven out of the old family home. At his lowest point, he unexpectedly activates an Ocean Encyclopedia System, turning his eyes into radar that can identify the quality of seafood through its colors. From clams and king mud crabs to splendid spiny lobsters and large yellow croakers, he can recognize every catch at a glance. While others struggle to dig for clams in the mudflats, he keeps discovering premium seafood, unlocking entries in the encyclopedia to earn points and upgrade his detection abilities. From gathering seafood along the beach to venturing into the open ocean, he seizes every opportunity, claims entire fishing grounds, and eventually becomes a world-leading seafood tycoon.