In a world where Voldemort has won, he is gravely injured and merges the souls of his Death Eaters with the Princes of Hell to protect the Horcruxes. Hermione and the surviving members of the Order are forced to go underground. When Hermione finds herself in danger, the only one who can help is the devil himself, who now resides in Draco Malfoy.

Two years after the war, Hermione finds herself living a quiet lifestyle. Harry returns to Hogwarts to teach and Ron is drunk on his own fame and fortune. Hermione gets a sudden surprise when Draco Malfoy shows up in her bathroom asking for help. Hermione once again is unwillingly thrown into turmoil and adventure but this time she is fighting for the redemption of Draco's soul.