Purgatory: Middle of the Road

Everyone is familiar with the concept of good and evil, especially when it comes to death. Heaven and Hell, the Paradise and the Underworld, the Good Place and the Bad Place. It doesn't matter who you are, pretty much anyone knows that there are one of two places where you end up once you're dead. However no one really considers the third option that is available to some people: Purgatory. This option is the only option to those who are dead center in the gray area of the morality spectrum. Though most tend to forget about it since it's only been used in rare occasions. But what is the true purpose of this place? Why was it created in the first place only to be forgotten by most people? No one can say for sure...

After all, it's best to forget the past and ignore its mistakes, right?