The main character is Faan Ganma Bizen. He is the captain of the legendary black vessel. Faan Ganma Bizen is lazy and clumsy -- that is him when is resting. But once Faan decides to work, he is the best man available. Faan says things that normal people can hardly understand. And he doesn't say much, he only gives lots of clues. Everything starts when Captain Faan let Mia and Tuban Sanoo be aboard. Mia is a princess of a fallen country and Tuban is the best, people say, swordsman as well as strategist. Although Faan Ganma Bizen is the main character, it seems Faan, Mia and Tuban are the main characters as Mia and Tuban appear in all episodes. Mia is looking for science to restore her county, Ontana. Tuban is protecting Mia as the will of someone Tuban trusted. Faan Ganma Bizen agreed to take Mia to where she could locate the science in exchange of her virginity. (Don't get Faan wrong here, I believe he meant something else but at this moment, Mia's virginity is all I can guess.)