From the Throneworld of Terra does the Avenging Son hurl his fleets, their mission the very salvation of mankind. As vessels in their thousands burn through the cold void, the attention of Fleetmistress VanLeskus turns to the Machorta Sound - a region under attack by a dreaded Slaughter Host of the Dark Gods. The success of the Indomitus Crusade will be determined by this conflict, and the desperate mission of Battlegroup Saint Aster, led by Space Marine Lieutenant Messinius. Even then it is but a prelude to the forthcoming bloodshed. Nearing the end of the wars of Unity, Valdor's courage and purpose is put to the test as never before.
The petty warlords and tyrants of Old Earth have been all but vanquished, and the Emperor's armies are triumphant. What now for the nascent Imperium and what fate its forgotten soldiers, its Thunder Warriors and armies of Unity? A new force is rising, one which shall eclipse all others and open the way to the stars. But change on Terra is seldom bloodless and for progress to be ensured darker deeds are necessary. Sent tracked and signed for at no extra cost!