Fresh from the slaughter of the Emperor's enemies in the north, Ludwig Schwarzhelm, Emperor's Champion, is sent to Averland to oversee the inauguration of a new elector count. Beset by greenskins, and hampered on all sides by the ambitions of rival magnates, he is soon fighting to keep the fractious province together. But the rot runs deep. Powerful forces in Altdorf seem determined to see him fail, and suspicion falls on even his most trusted allies. When all is at its bleakest, the mark of Chaos and the full horror of his task is finally revealed. Alone, doubted by those closest to him, this will be Schwarzhelm's greatest ever challenge, one on which the destiny of the Empire itself depends.