Lin Hai, a young fisherman from a coastal village, gets brutally beaten and thrown into the sea by local thug Zhao Biao—while his sister-in-law Chen Xiaorou suffers humiliation. As he drowns, Lin Hai awakens a Super Beachcombing Radar System: it lets him see treasures buried underwater and scan items for authenticity while warning of danger. Starting with just a pair of golden abalones, he buys a boat, braves the Devil's Sea, battles giant sharks, and hauls in premium tuna—rising from rock bottom to unstoppable success.