The hour of Judgment has come. In the depths, Gaulthier of Flanders is about to face the Aa, terrifying creature of the shadow and flesh of his flesh! In Hiérus Halem, the master of the machines tries to resist the fire that consumes him, the light of Syria so pure that she has even resisted the test of the mirror of the Ames. Each one continues his quest on his side of the mirror. But, the shadow and the light invariably attract.