In his past life, Finn Lee was an alcoholic wastrel, which led to his wife Wren Sue being caught in a typhoon while out at sea and getting into danger. Reincarnated, he jumps into the sea to save his wife, and accidentally inherits the power of the Sea Dragon Deity, gaining abilities to control water and see through objects to identify treasures. The reformed prodigal goes out to sea to catch fish, fighting against greedy in-laws and unscrupulous merchants along the way. He buys boats, builds houses, opens an aquatic market, and leads the entire village to get rich together. Navigating capital traps and interpersonal disputes, Finn protects his family, builds up the fishing village, and welcomes a happy, fulfilling new life.