Raised in a world mired in political games and the struggle for power, Perturabo was always a unique phenomenon for the people of Olympia—truly, his philosophical and scientific inquiries had no equals. But after meeting the Emperor, decades of thankless campaigns followed the Primarch, and inside him grew dissatisfaction with the place the Imperium assigned to his legion. And when he receives news of unrest on the planet that became his home, the Iron Lord orders his warriors to abandon the fight against the alien “hruds”—and crush the brewing uprising at any cost…