In the walled, hyper-stratified metropolis of Solaria, the natural sun has died, and citizens rely on a massive, artificial sun grid. The elite living in the Upper Spire bask in pristine light, while the lower rings rot in perpetual, toxic twilight. When the artificial sun begins to fail, an underground rebellion, a rogue military commander, and a high-born singer accidentally collide, uncovering a conspiracy that goes to the very core of their civilization.
