From the introduction:
Once upon a time, two gods lived together in our sky: the god of love and the god of death. Two great and powerful foxes who danced as one. Until one day, in a fit of jealous rage, the god of love was killed and fell from the sky. Now there is but one god. Our sorrowful and tired god who sleeps inside the moon.
The dead rise and wander under her crescent glow. Ghosts remain where flesh once was. Bones refuse to settle. Spirits twist and churn into beasts, destroying all in their path, seeking an end to their suffering. No one prays, for they fear what shall happen when she wakes.
Sometimes those that die return intact. Chosen by Love, some clamor. Cursed by Death, bemoan others. They are changed strange by their liminality. Mutated. Made supernatural. Gifted with otherworldly power. They are the canary in the coal mine of the moon’s nightmare. The only hope for a spirit to join the moon in her slumber. Songbirds.