Have you ever heard the phrase, "I'll do this when hell freezes over!" Well, guess what, Hell is Frozen over.
Why? Who knows.
A woman, conveniently, with the name Snow has been brought to Hell when she accidently activates a portal and is marked by a demon herself, for death. Something about this woman is not fully human, and no one understands or can read what she is or how. Now that she has learned that Angels and Demons are a thing, she's forced into their chaotic underworld to help subdue it. She is forced to try and unravel her own history, while also trying to keep her composer sane to ensure the damned souls do not try to eat her. With the demons she meets along the way, perhaps Snow can uncover the truth of the Underworld being frozen over, and why the Celestial's are so angry with them.