Alina Starkov's power has grown, but not without a price. She is the Sun Summoner - hunted across the True Sea, haunted by the lives she's taken. But she and best friend Mal can't outrun her enemies for long

The Darkling is determined to claim Alina's magic and use it to take the Ravkan throne. With nowhere else to turn, Alina enlists the help of an infamous privateer and sets out to lead the Grisha army.

But as the truth of Alina's destiny unfolds, she slips deeper into the Darkling's deadly game of forbidden magic. To save her country, Alina will have to choose between her power and the man she loves.

No victory can come without sacrifice - and only she can face the oncoming storm.