War has begun. Arin is in the thick of it, with the East as his ally and the empire as his enemy. He's finally managed to dismiss the memory of Kestrel, even if he can't quite forget her. Kestrel turned into someone he could no longer recognize: someone who cared more for the empire than for the lives of innocent people-and certainly more than she cared for him. At least, that's what he thinks.
But far north lies a work camp where Kestrel is a prisoner. Can she manage to escape before she loses herself? As the war intensifies, both Kestrel and Arin discover unexpected roles in battle, terrible secrets, and a fragile hope. The world is changing. The East is pitted against the West, and Kestrel and Arin are caught between. In a game like this, can anybody really win?