Dark Apostle Marduk face challenges from within his own Legion as he wages war with the White Consuls Space Marine Chapter. Harnessing the power of the Nexus Arrangement, a powerful necron device, Marduk can turn the tide in the Word Bearers' 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 fulfill his ambition, he must defy an onslaught from the necrons, the White Consuls and his own legion.