Elgol’s world holds mysteries, but none as mysterious as Arran herself. Arran has arrived in Ormiscaig, where she faces her destiny. She must destroy the Dalheian sent by Arguth to ruin both worlds. Helped by the wood nebs, fairies, and merfolk, the battle starts with the dangerous ater. The ghostly kings of Scotland also join Arran to search through time and prophecies to avert impending doom.