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. But the last two women betrothed to this prince were murdered, and a sorcerer-assassin is bent on making Isabelle the third. Aided and defended by her loyal musketeer, Jean-Claude, Isabelle plunges into a great maze of prophecy, intrigue, and betrayal, where everyone wears masks of glamour and lies. Step by dangerous step, she unravels the lies of her enemies and discovers a truth more perilous than any deception.