A young man is reborn in the 1980s, only to discover that all the men in his family have died in a maritime disaster, leaving behind debts. His ruthless uncle plans to sell his sisters-in-law to settle what they owe. At this critical moment, the young man awakens the Sea God's Eye System and promises to repay the debt within three days. Ignoring everyone's warnings, he ventures into treacherous waters around the reefs to catch rare seafood. Determined to protect his family through his own abilities, he sets out to foil the villains' schemes.