Neferata is besieged. To the east, the daemon prince Graunos gathers the legions of the Blood God, seeking to tear the Mortarch from her throne. To the south, Sigmar's storm heralds the coming of the Anvils of the Heldenhammer, intent on pressing the God-King's claim. All the while, an ancient enemy grows, hidden within Neferata's lands. Never has her power seemed so fragile. But, within the dominion of bones, the Mortarch of Blood controls all, and even the champions of the Dark Gods will find themselves puppets in her schemes.