Enna's life was not meant to be simple. When her brother, Leifer, brings home a mysterious piece of vellum that teaches him how to set fires—without a spark, without flint—Enna cannot decide if this power is one she wants for herself, or something that should be extinguished forever. And when Bayern, their country, goes to war, the choice becomes nearly unbearable. Enna never imagined that the warm, life-giving energy of a fire could destroy everything she loves, but she must now save herself and Bayern before fire consumes her entirely.