As the Joubert Sisters navigate a world of impending war without their full magic, the Prince of Bone fights for his life-torn between the land of the living and the land of the dead-only to discover the Court of Achlys means more to him than he ever knew.

Agatha untangles the prophecy that set their realm aflame.

Winnie and the Druids prepare for war.

Seleste faces physical setbacks in a foreign land.

And Sorscha? Ah, Sorscha and her sass discover secrets in the catacombs of Araignée.