The Phalanx, the great star fort of the Imperial Fists, welcomed on board Inquisitors, Sisters of Battle and adepts of the Cult Mechanicum, along with Space Marines from half a dozen Chapters. They came together to witness the end of the history of the once glorious and noble Space Marine Chapter, the Soul Drinkers, now Chaos-tainted heretics and renegades who stood trial for their crimes against the Imperium. But even such a concentration of righteous power may not be enough to protect against the evil planned by the dark forces that have come into motion...