Metis is a frozen wasteland of a moon. The sea grows smaller every year, and the blue-green planet thrums in the sky, mocking it. Castle Bitfrost, imprisoned in unmeltable ice, stands as a monument to everything humanity will never understand of their world. Driven to the equator, the population has dwindled to near-nothing, animals hunted to extinction, forests burnt in great swathes. Zaun sees the world through the crack in her skull. As a former soldier, she's survived the impossible, only to record Metis' last days in the journals her mother left behind. Lost to her head-trauma, Zaun paints the world as a scattered series of observations, disconnected from the past she doesn't remember. But before Metis can give itself over to the gods' anger, something stirs on the horizon. Shadows take form before Zaun's eyes and a wolf stalks the streets, pushing her towards the unknowable, the unmeltable.