War has come to Nocturne. After decades of planning and slaughter Nihilan has mustered a vast armada of Dragon Warriors, dark eldar and Chaos renegades. In the name of vengeance he launches his assault on the Salamanders. Unrest plagues the Chapter's ranks in the face of this invasion. A prophecy from the Tome of Fire has foretold of a saviour or destroyer, the psyker Librarian Dak'ir. As the attack begins and the Salamanders marshal their armies for battle, Dak'ir's destiny is finally realised. Meanwhile, amidst the enemy fleet, Tsu'gan of the Firedrakes is held captive. With hell and fire all around them, a reckoning between these bitter rivals is at hand - its resolution will see the prophecy fulfilled and decide the fate of Nocturne.