"Adalheid Castle is in chaos. Following a shocking turn of events, 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. Meanwhile, Serilda is determined to work with Gild to help him solve the mystery of his forgotten name and past. But soon it becomes clear that the Erlking doesn't only want to use Serilda to bring back his one true love. He also seeks vengeance...