When Damnos shook in a cataclysmic earthquake, an ancient power awakened deep within its depths. The Necrons awoke from their slumber to destroy the planet's human population. It seems that everything is lost, but hope for salvation comes from heaven - the brave Ultramarines, after an orbital bombardment, deploy their forces to Damnos. They are led by two legendary warriors - Captain Cato Sicarius and Chief Librarian Tigurius. They are the planet's last hope to survive a ruthless enemy, but the tension between them could cost them victory. And while in the battle raging on Damnos, the Ultramarines strive to prevail over a soulless enemy, Tigurius receives a terrible vision - a vision of the death of a hero...