The River People and the Mountain People have survived for another season. But at what cost? Pandora has returned to her village. She is haunted both by her failure to bring her friend home and the vision she has seen of the last days, The Burning, when creatures swarmed the city. How did these monsters come into being in the first place? And are the last remnants of humanity really safe from them? Whilst Pan now knows how to shoot an arrow, she still does not know the shape of her own heart and the river stone remains in pieces...