The Death Guard are the chosen Legion of the Plague God Nurgle, the diseased scions of the Daemon Primarch Mortarion, and they bring sickness and destruction to all who oppose them.

As the massive space hulks known as the Arks of Omen spread the flames of Abaddon’s war across the galaxy, a powerful agent of the Inquisition ignites an ancient archeotech beacon – praying that its light might drive back the darkness. Yet that which burns bright may be seen from afar. Deep in the void, the hateful gaze of Angron, Daemon Primarch of the World Eaters, is drawn towards the light. Driven by his fury, the Red Angel vows to drown the beacon in blood.

The Great Rift has torn the Emperor's realm in two. Ancient alien empires rise from the ashes of prehistory to claw at the dying stars. Predatory nightmares boil from the outer darkness, while everywhere the veil of reality wears thin and the flames of war rise ever higher. Day by day, battle upon battle, the galaxy careens ever closer to total annihiliation.

The Blood Angels are counted among the most noble of Space Marines, the angelic defenders of Humanity. Yet beneath their beautiful appearance lie dark secrets – the ferocious Red Thirst, and the berserk psychosis known as the Black Rage.

The Deathwatch is a gathering of Space Marines unlike any other, as every Deathwatch warrior is pledged to its ranks by another Chapter. Together they form the lmperium's greatest weapon against the threats posed by xenos races.

The Adeptus Custodes are demigods of war, sworn to defend the Emperor until death. Joined in battle by the eerie Sisters of Silence, they are the most elite warriors in the imperium, clad in auramite armour and wielding some of the finest weapons ever created by Humanity.

The Thousand Sons advance into battle amid gouts of kaleidoscopic warpflame and bolts of raw sorcery. This sanity-blasting Legion fights to further the labyrinthine plans of its deity, the Chaos God Tzeentch.

Genestealer Cults consist of mutated acolytes, turncoat soldiers, and predatory alien monsters. Corrupted by Tyranid gene-taint, the cults fight with the coordination of swarming insects and the zealotry of true believers.

The Drukhari are a decadent culture of alien tormentors and raiders. Once part of a galaxy-spanning empire, the Drukhari now indulge in every macabre passion their supreme intelligence can conceive.

The Aeldari are an ancient and dying people, their fractured factions each finding ways to survive in a hostile galaxy. All depend on the insight of their seers, the skill of their warriors, and the sleek superiority of their weapons of war.

The Astra Militarum are the backbone of the lmperium's largest armies. Their massed infantry and tank regiments form a bulwark that stands between Humanity and a nightmarish galaxy of horrors.

As vast and dark as a sunless void, the Blackstone Fortress is a creation far beyond the ken of any race in the galaxy. In this age of darkness, in a galaxy riven with strife and horror, the desperate and intrepid alike search this Fortress for long-lost technologies that may be used to turn the tide of war.