A cryptic prophecy forces four mortal enemies—Albus Dumbledore, Lord Voldemort, Hermione Granger, and Bellatrix Lestrange—into an inescapable alliance to save the magical world from total annihilation. Trapped within a sentient sanctum, their shared magic and forced proximity ignite their long-held hatred into a raw, carnal hunger, leading to a series of explicit encounters that will forge them into the world's new, and infinitely more dangerous, rulers.