In a world where most of the land floats in the sky and has yet to be discovered, the birth of airships lead to the beginning of a new era of adventurers who seek riches, ancient relics, hidden civilizations. However, some will also plunder from others or conquer lands, all of them known as Reavers. Kay Crossroad is a young man who is a Caster (people with magical powers), dreams of adventure, and begins his journey through the world and beyond. Together with his newfound allies, they discover more than just treasures but the true essence of dreams and adventure.