A young girl wanders the moonlit halls of Castle Empyrean. She follows the mysterious sound of someone weeping. Zandria could not expect what she would find on the other side of the black door. Her mother has been missing for six long years. She vanished on the day of Olena's birth when she was summoned to become Queen of the Eastern Sky. Now Zandria discovers there is something more to her strange disappearance.
Zandria and her sister, Olena, start the next step in their journey the very next day after the events of The Fourth Queen. This time the quest is for something more valuable than either of them could imagine.With the help of friends old and new, the sisters have a chance to bring back their mother and save the Lost Queen.
However, the sinister Raymond Shadaway and his traveling Carnivale Chaotica are doing everything in their power to stop them. Will Zandria and Olena save their mother in time as evil forces once again threaten to destroy Empyrean?