A powerful ally emerges amid Alina's attempt to tear down the Fold. Kaz reckons with ghosts from his past. Kirigan spares no mercy to expand his power.

Alina considers a proposed partnership that could help unite Ravka. With vengeance nearly his, Kaz moves the final pieces of his plan into place.

As Alina reels over the staggering cost to harness the Firebird's power, Kirigan readies his army for a ferocious battle pitting Grisha against Grisha.

Forced into an impossible situation during her fight with Kirigan, Alina makes a fateful decision that alters her relationship with magic — and Mal.