For a thousand years, the Sabbat Worlds have been lost to the Imperium, claimed by the dread powers of Chaos. Now, a mighty crusade seeks to return the sector to Imperial rule, but the innumerable forces of the Archenemy attack without mercy, and planet after planet burns with the flames of war. Amidst this nightmare, the armies of the Astra Militarum stand stoic against their foes. The Tanith First-And-Only are among the most legendary of these regiments of Imperial Guard, and at their head stands Commissar Ibram Gaunt, unflinching in duty and unrelenting in combat. But now the very future of the regiment is in jeopardy as Gaunt’s Ghosts battle the forces of Chaos across the Sabbat Worlds. From daring rescue missions to the grim horrors of the battlefield, the Tanith First-And-Only must survive extreme danger and the ghosts of the past if they are to avoid becoming forever lost.