There was a time when God and Satan were co-authors of our existence. But lately God has pushed Satan's creative input aside, ensuring that heaven would take all of the funny and interesting souls, which meant that the losers and dullards were assigned to hell. This made Satan's home turf extremely boring, so he knew he had to do something about it.

Satan cunningly convinced God to send him to Earth, where he tried to turn the tables and get some interesting people on a path towards hell - only one problem: he finds himself stuck on Earth, which he hates more than hell itself. Worse, in sending Satan to Earth, God accidentally opened the portal from a dimension that makes hell look like paradise.

As the demons from this dimension terrorize the mortals it falls on Satan to be their savior. To accomplish this Satan must face his own greatest terrors and risk everything. But there's a bigger problem... Satan is not the suave, sophisticated, powerful being he is sometimes wrongfully depicted as - he's a bumbling fool who has a knack for pissing people off!

With the assistance of HG - a female robot companion and his new Mormon wife, Satan tries to find his way home, but the secrets of the universe that reveal themselves shake his entire world.