New Paleo is a floating city above the clouds—a waystation for adventurers with their eyes fixed on something larger. That destination is Marble Blue, an azure planet visible from the continent's edge and the site of everything explorers have been chasing. The protagonist grows up on the outskirts of New Paleo with his sister, tending livestock, until a mysterious voice draws him out one night. A beautiful woman appears and tells him plainly: it is time to go to Marble Blue.