Eleven thousand years ago, a god fell. Today, the city of Ossary lives inside his petrified corpse, running on the calcified divine dust cut from his bones.
For eighteen-year-old Neris Vael, an apprentice healer in the Lung Quarter, mending flesh is a practical trade. But when a routine surgery goes wrong, a living golden thread begins to spread beneath her skin, pulling her down toward the sealed, unmapped heart of the titan.
Hunted by the ruthless Guild of Dust Factors and guided only by her aging master, Neris must descend into the deep galleries where dead veins rot and failed creations sleep. There, she discovers a terrifying truth: the god’s greatest wound was never an accident, and the machine keeping him alive is running out of time.
She is not the first healer called to the dark. But she might be the first who can choose how it ends.