The unthinkable has happened: the imperial capital is under siege by the Three Nations Alliance thanks to a surprise attack, which will divide the Empire in two. The Empress and the Empire's paltry forces at the scene must rally in a bid to evacuate what people and structures they can, and buy time for the capital's relocation. Lafier and Jint are charged with saving the Empire's culturally significant artifacts, even while Lafier's brother Duhier is stranded behind enemy lines.