It's been two years since the first attack, and now the disease is spreading like wildfire. In the beginning people were dropping like flies, but it wasn't long before their bodies rose back up and began taking others down. There are no symptoms, there are no signs, you could die without even knowing you were infected. That's why this one disease managed to wipe out millions and millions of innocent people. No one knows how it started and no one knows how to end it. It's taking over.