In the third and final book in the Grisha verse, Alina and her friends have ended up at the Apparat, from which she had to accept his help against her own will. Alina wants to escape from the Apparat and look for the Firebird, the third amplifier. Together with Mal and their friends, they go and search for the third and last amplifier and the lost prince, which they are not even sure if he is still alive. In this part, Alina will have to forge new alliances and set aside old rivals to search for the Firebird. But while Alina is on the road, she discovers something that will change the relationship between her and the Darkling. Killing the Firebird appears to be the only thing that can save Ravka from the Darkling’s evil plan.
Juliette’s touch is lethal. She has been locked up all alone in the Reestablishment for almost a year until she meets Adam, her new cellmate. He talked about how the world around them is slowly dying and what the Reestablishment is planning. The Reestablishment wants to use Juliette as a weapon against humanity.