Life is not easy. Spending eternity in a place filled with fire and
brimstone while the bottom half of you has been turned into a goat is even
worse, but that is what Satan has to put up with.
Satan is somewhat world-weary (or rather underworld-weary), and spends most
of his time torturing Thomas Quentin Crimp, the evilest human in the world,
ignoring his sycophantic and grotesque assistant Scumspawn, and trying to argue
with the Professor, a kind human who was sent to Hell because he was an atheist.