When her cousin gets kidnapped by a dastardly trickster, Luzia is forced to sell herself in servitude to the Eoi in exchange for his life. But the terms of the deal turn out to be much more complicated than she ever imagined …

Luzia N.E. Drainway never really thought too much about the Astrosi. They lurk above and below Bastion City—a giant multileveled megalopolis she calls her home—and they tend to keep to themselves. On the rare occasions they use their magics to meddle with human affairs, most people with an ounce of sense steer clear of whichever unfortunate soul happens to be their victim. Luzia is far too dedicated to repairing and maintaining the frequently damaged Bastion to pay them much attention, and prefers to ignore the Astrosi just like everyone else.

That disregard gets blown out of the water when a rogue Astrosi and nefarious trickster named Carrion kidnaps her nephew and sells him to the Eoi, one of the Astrosi courts.

With no other options to save her nephew, Luzia trades her life for his and finds herself in service to the Eoi. Unfortunately for her, Astrosi logic is acrobatic in ways even the most devious human mind can barely comprehend. It’s not until the deal is struck that she realizes she’s trapped in the most abstruse verbal contract imaginable. She is essentially conscripted into their ranks, and her devotion to her city becomes stretched to breaking point by her new masters’ orders.

As she struggles under this weight, she begins to uncover the secrets of the Astrosi people—the internal battles for power between the two kingdoms, the never-ending conflict between them, the trickster Carrion who somehow bridges that gap, and the very nature of the Bastion itself.