Karen Moss, the legitimate heir to the deep-sea water-manipulating superpower, returns to the city after three years of rigorous training to investigate his grandfather’s mysterious death and fulfill his arranged marriage with the Winchester family. Subjected to humiliation and manhunts by his fiancée’s clan, he subdues the city’s most powerful Parker clan with his unmatched hydrokinetic powers and develops genuine affection for Audrey, his unknown fiancée. As the truth behind his grandfather’s death and the family conspiracy comes to light, Karen will settle all injustices as the ruler of the seven seas and reclaim everything that rightfully belongs to him.