In a world of soaring continents and bottomless skies, where a burgeoning new science lifts skyships into the cloud-strewn heights, and ancient blood-borne sorceries cling to a fading glory, Princess Isabelle des Zephyrs is about to be married to a man she has barely heard of, the second son of a dying king in an empire collapsing into civil war. Born without the sorcery that is her birthright but with a perspicacious intellect, Isabelle believes her marriage will stave off disastrous conflict and bring her opportunity and influence.