The Book of Purgatory is a comic adaptation/reinterpretation + crossover story between classical works of literature, depicting the stories themselves, and what could have happened after their endings. At the forefront of this story is Doctor Faust, and his demonic companion Mephistopheles.
Faust is tempted by Mephistopheles to move too quickly in his pursuit of Margaret’s love, and it seems there’s a long forgotten reason for his desperation.
Some quotes are directly from the Kaufmann English translation of Goethe’s Faust.