Dark Apostle Marduk faces challenges from within his own Legion as he wages war with the White Consuls. Harnessing the power of the Nexus Arrangement, a powerful Necron device, Marduk can turn the tide in the Word Bearer's favour. But just as the White Consuls are on the verge of defeat, an old enemy returns to throw the entire dark crusade into ruin. If Marduk is to survive and fulfil his ambition, he must defy an onslaught from the necrons, White Consuls and his own Legion.