Fifty-four years have passed since Crow Tallin, the catastrophic celestial event that merged Fayün and the human world. One devastating result of that cataclysm is that most human babies are born fused with fay spirits. The Mystics of Kelt Apar, once beloved, are blamed for this worldwide phenomenon.

On the island of Moth, the Barons have declared the Myst illegal and imprisoned all Mystics under house arrest. Under the watchful eyes of deadly Hunters, a much-older Pomella AnDone now lives as a prisoner at Kelt Apar with her granddaughter and apprentice Mia, as well as the rapidly declining High Mystic of Moth, Yarina Sineese.

When the time comes to conduct the ceremony intended to pass the title of High Mystic from Yarina to her successor Vivianna, something goes horribly wrong, leaving the lineage of Mystics in doubt.

With new rivals seeking to claim Moth for their own, Pomella must undergo a dangerous dreamwalk into the mind-bending and heart-wrenching Mystic Skies in order to learn the mystical name of the island itself.