Fisherman Gu Feng is framed by close relatives and falls into the sea, receiving dragon pellet divine power bestowed by a giant sea turtle. Returning to protect his wife and daughter, he resists injustice and leads fellow villagers to develop sea-dike fishery. Facing the threat of a strange octopus beast in the sea, he finds the town-sea divine weapon and is elected as the East Sea sea protector. Gu Feng harbors great righteousness, connecting fishermen from all villages to watch over and help each other, protecting the peace of one side of the sea, shielding the common people to live and work in peace and contentment, and interpreting the great national patriotism of guarding the homeland and helping the world for the people.