Athelwyrd, the last great bastion of Ghyran's sylvaneth, has fallen to the pestilent servants of the Plague God. At their head, the warlord Torglug the Despised will do anything to seize the ultimate prize his master so fervently desires: Alarielle, the Everqueen. Her defenders will not see her taken easily though – Lord-Castellant Grymn and his chamber of Hallowed Knights have sworn themselves to her protection. As a great exodus of sylvaneth and Stormcast Eternals sets out from the ruin of Athelwyrd with Torglug's Chaos host hard on their heels, the strength and conviction of Alarielle's defenders will be tested as never before.