Serilda finds herself ensnared in a deadly game of make-believe with the Erlking, who is determined to propel her deeper into the castle's lies. She is determined to work with Gild to help him solve the mystery of his forgotten name and past. It soon becomes clear that the Erlking is seeking vengeance against the seven gods who have long trapped the Dark Ones behind the veil. If the Erlking succeeds, it could change the mortal realm forever. Will Serilda and Gild be able to break the spells that tether their spirits to the castle before the Endless Moon finds them truly cursed?