For centuries the War Priests of castle Andrak have protected the source of life in the Free Lands: the Purifying Flame from their ancient enemies, the Omegri. Every three months one hundred knights are chosen to defend the castle. Only a few survive. Known as the Burning Season, the knights chosen to defend Castle Andrak alongside the War Priests are whittled down until only a few remain. Those who survive are changed. Lives are given willingly, for should the Omegri succeed in destroying the Flame they will plunge the world into darkness. All life hangs in the balance.