As war rolls across the Cryptus System, Blood Angels Sergeant Jatiel and his squad are far from the fighting, standing sentinel over a dead world. Across the galaxy another threat rises as the necron overlord Anrakyr the Traveller seeks to awaken a tomb world – a goal that will ultimately lead him into the heart of the battle for the Cryptus shieldworlds and a desperate alliance with the sons of Sanguinius.