With the worlds of the Cadian Gate all but on their knees with the weight of internal strife and the so-called Plague of Unbelief, Abaddon the Despoiler has launched an invasion the scale of which has not been seen since the darkest days of the Horus Heresy. The Imperial Navy has been forced to engage with a force many times its own strength, and has been beaten back across a number of key sectors.
The skies above the worlds of the Imperium have been turned black with innumerable drop craft as the dread Legions of Chaos begin their invasion. The Planet Killer itself, Abaddon’s flagship, drifts ever closer to the Cadian system. Terrible, mighty Traitor Marines tread the surface of worlds they have not set foot upon for ten millennia and their hatred and thirst for vengeance truly knows no bounds. The Night Lords spread fear and confusion across the Scarus sector, and the Alpha Legion reveal themselves across the Segmentum Obscurus, badly delaying Space Marine reinforcements in pointless and bloody struggles. The Emperor’s Children, led by the immortal son of Slaanesh, Lucius the Eternal, feast well upon the population of Belisar. The Death Guard stalk across the battlefields of Amistel, the ground beneath their feet cluttered with the unquiet corpses of those who the Plague of Unbelief has consumed. In the wake of the Chaos Space Marine Legions come the hordes of the damned: traitors, mutants, cultists and fiends of the very worst aspect despoiling the domains of Mankind by their very presence. The acts of wanton destruction and desecration they have carried out have shaken the stoic defenders to the core.
Those who have risen against the tide of horrors number from newly-beatified saints to redeemed sinners. The Dark Angels of the Adeptus Astartes strike back against the Chaos Space Marine Legions, despite being hopelessly outnumbered. Admiral Quarren himself leads a strike force against the rearguard of the Chaos forces. The entire battlefront witnesses countless citizens giving their lives in supreme gestures of self-sacrifice, and countless more defecting to the enemy in the face of such an onslaught.
As the orbital bombardments commence across the worlds of the Cadian Gate and saboteurs cripple defence platforms at critical moments, the defenders seek to react to a foe too awful for many to comprehend. Though the valiant Imperial Guardsmen of the Cadian Shock Troopers regiments are prepared since childhood to fight against such foes, none can foresee who will stand, and who shall fall in the face of such an onslaught. To the beleaguered defenders, it seems the very mouth of hell has opened, and every last one of its servants unleashed upon them.
Betrayal Ay Grafstuhl Starport