The green-skinned hordes of the Overfiend of the Octavius system have long been a thorn in the Imperium’s side – and now, with human worlds caught in the crossfire between the orks and eldar, that thorn will be removed. Temur Khan and his brotherhood descend upon Lepidus Prime to cleanse it of the green taint. The swift and brutal hammer to the Imperial Guard’s anvil, the White Scars strike hard and fast – but when the orks reveal a super-weapon, it may take more than just power to win the day?