Ever since an event known as the Disaster, monsters and mayhem rule the world. There are those lucky enough to live inside the Fence, while those who don't, are treated little better than the beasts that they fear.
The world had gone to hell long ago, taken over by the vampire race. In order to keep some sort of peace in our land, the Vampire Lords made a consecutive agreement. The rich and powerful humans could survive just as they had been, untouched by the vampires save for the occasional blood collections, or so they thought...