When Mitario and Emilia Amor de Frau, 2 twins leave their land Titan of the Leonis Archipelago, they encounter a new world only told in stories from their absent father. Tales of creatures forming habitable landmasses, people who wield the power of gods in their hands and engage in political struggle, a cloudy sea which holds secrets of this changing world and more. The trials, people, and tasks these 2 distant siblings will meet in this new environment, will continuously shape them from the blissful ignorance they had before forever.