Cole Rhodes, forced into the sea over debt, activates his Mark of the Sea God, contracts sea beasts. Salvages treasures, meets Claire Morgan to establish a seafood trade route. Confronts loan shark thugs, The Shark Gang, Black Stinger Pirates. Predicts tsunami, saving villagers. Establishes cooperative, develops tourism, turns over national treasures; protects family and waters, builds maritime empire with Claire Morgan, becoming a guardian of the sea.