The discovery of a strange and superior warship sends Dion, youngest son of the king of Xanthos, and Chloe, a Phalesian princess, on a journey across the sea, where they are confronted by a kingdom far more powerful than they could ever have imagined. But they also find a place in turmoil, for the ruthless sun king, Solon, is dying. In order to gain entrance to heaven, Solon is building a tomb - a pyramid clad in gold - and has scoured his own empire for gold until there's no more to be found.

After losing their parents in the last doomed uprising, two siblings will find themselves at the center of an epic struggle for power. When Ella witnesses an enchanter saving her brother's life, she knows what she wants to be. But the elite Academy expects tuition fees and knowledge. Meanwhile her brother, Miro, dreams of becoming one of the world's finest swordsmen, wielding his nation’s powerful enchanted weapons in defense of his homeland.

Theirs is a world of opposites. The privileged live in sky manors held aloft by a secretive magic known only as the Mysteries. Below, the earthbound poor are forced into factory work to maintain the engine of commerce. Only the wealthy can afford to learn the Mysteries, and they use their knowledge to further lock their hold on society. Cettie Pratt is a waif doomed to the world below, until an admiral attempts to adopt her. But in her new home in the clouds, not everyone treats her as one of the family.

Life in the wasteland is a constant struggle. No one knows it better than Taimin. Crippled, and with only his indomitable aunt to protect him, Taimin must learn to survive in a world scorched by two suns and frequented by raiders. But when Taimin discovers his homestead ransacked and his aunt killed, he sets off with one mission: to seek revenge against those who stole everything. With nowhere to call home, his hunt soon takes a turn when he meets a mystic, Selena, who convinces him to join her search for the fabled white city. 

Eilean was born a “wretched”—a lowly foundling raised by the Aldermaston of Tintern Abbey. Then she’s chosen to assist in establishing the new abbey of Muirwood, now the site of a castle in the swampy Bearden Muir. Eilean’s role is as night servant to the druid Mordaunt, the king’s exiled advisor—and prisoner. He’s clever, dangerous, and invaluable to the Aldermaston.