The south of France, 1790: Mireille de Rémy and her cousin Valentine are young novices at the fortress-like Montglane Abbey. With France aflame in revolution, the two girls burn to rebel against constricted convent life - and their means of escape is at hand. Buried deep within the abbey are pieces of the Montglane Chess Service, once owned by Charlemagne. Whoever reassembles the pieces can play a game of unlimited power. But to keep the Game a secret from those who would abuse it, the two young women must scatter the pieces throughout the world.