Lady Prudence Alessandra Maccon Akeldama—better known as “Rue” to her friends and quite deservingly so—is causing havoc all over London society. It doesn’t help matters that she’s related to the three most powerful supernaturals in the British Empire: daughter of the werewolf dewan Lord Conall Maccon and preternatural Lady Alexia Maccon, and adopted daughter of vampire potentate Lord Akeldama. On top of that, Rue possesses her own unique abilities; she is a metanatural (or “skin-stealer”), who can temporarily take the powers of any supernatural she touches.
Lady Alexia thinks its high time for Rue to put a stopper on her wild behavior, and Lord Akeldama wants to send her on a mission to acquire a new variety of tea leaf. Thus begins plans to send Rue off to India in a dirigible of her own naming—The Spotted Custard—along with a slapdash crew of the best and brightest (though some members are also the most irksome to Rue). What awaits in India, however, is a revelation that could possibly change the geopolitical balance of the entire Empire.