Through a series of letters, senior devil Slashreap trains his young protégé, Scardagger, to win an individual soul away from Heaven. As the devils plot their way to triumph, they reveal the spiritual dangers and risks we face in today’s society. Their frighteningly accurate perspective on issues such as contemporary technology and sexual mores is interwoven with timeless matters such as the power of prayer, the purpose of suffering, and the promises held out by Heaven… and Hell.