When Wu Sui opens his eyes again, he finds himself back in the year 2000, on the very day his wife and daughter's fates were changed. Faced with his sick daughter and a wife who has lost all faith in him, he decides to start over. After unexpectedly obtaining an Ocean Encyclopedia System, he begins with an unremarkable stretch of mudflat, where green crabs, golden butter crabs, and other precious seafood appear one after another. Through hard work and fortunate opportunities, Wu Sui gradually improves his family's life and wins back their trust through his actions, leading his family toward a stable and prosperous new life.