Saito's been in hot water with Louise before, but things have never looked this bad! Siesta, and the rest of the gang take Saito on a treasure hunt that could fix his romantic problems once and for all, but he finds more than he bargained for—the first real clue that could lead him back to his homeworld. Meanwhile, the small nation of Tristain is on the brink of war with the Albion Empire whose underhanded tactics threaten to push hostilities over the edge. Can a mage called Zero and her legendary familiar come together to prevent a catastrophe?