Born by a princess of Atlantis, an underwater nation, but left immediately after birth, Arthur is raised by her hungry counselor, Nuidis Vulko, to become a mighty warrior. However, Arthur is rejected by those in Atlantis because he is not “pure”, his father being a landowner. Eventually he has to leave Atlantis. When his stepbrother and current king in Atlantis uses an incident to declare war on the earth, Arthur joins the daughter of an enemy of his to prevent this war and save both nations from suffering immense losses .