Kurara has never known any other life than being a servant onboard the Midori, a flying ship serving the military elite of the Mikoshiman Empire, a vast realm of floating cities. Kurara also has a secret -- she can make folded paper figures come to life with a flick of her finger. But when the Midori is attacked and Kurara's secret turns out to be a power treasured across the empire, a gut-wrenching escape leads her to the gruff Himura, who takes her under his wing. Under Himura's tutelage, and with the grudging support and friendship of his crew, Kurara learns to hunt shikigami -- wild paper spirits sought after by the Princess of Mikoshima.

But what does the princess really want with the shikigami? Are they merely enchanted figures without will or thought, or are they beings with souls and minds of their own? As fractures begin to appear both across the empire and within Kurara's understanding of herself, Kurara will have to decide who she can trust. Her fate, and the fate of her friends -- and even the world -- may rest on her choice. And time is running out.