The basic plot of this is that you're sent along with a team of highly skilled specialists, scientists and militaries into a vortex named "The Zwartzwelt" which is slowly consuming the earth starting with the southpole. naturely shit hits the fan, people die and you're onboard of the only ship that survives.
however, after a short while, when you start exploring the Zwartzwelt, it's becoming more obvious that you are quitte literally in hell. Now this is where it gets interesting... all of these "sectors" represent the sins of humanity, which in turn strongly resemble The Godly Comedy (A.K.A Dante's Inferno). Now for my favorite part: the game actually fucks you over into the choice of actually killing earth by the way you play. for example if you play a Goody-Two Shoes kind of character you actually get fucked over into enslaving all of humanity to god. like forever. without dying.
that's where you come to the realisation that doing the right thing isn't that good at all. i was kinda shocked because of this, probably because of being raised on sugarcoated hollywood crap and being raised as a christian when i was younger.
in fact Satan was actually more reasonable, seen as she (yes, this satan is a she) wanted a world where everyone was free of all stuck-up religious rules and values and people would actually die instead of religious fairytale crap about immortality.
It was probably the first time a game actually made me think about stuff like this.