Ragnarok. Armegeddon. The Rapture. The Zombie Apocalypse. Hell on Earth. It doesn't matter what you call it, because it is all the same thing. You've been Godsmacked.
One day you're living life, worrying about your rent or deciding which new car to buy and the next day you're trying your damndest to not become a snack for your former friend/lover.
Money is now toilet paper and you no longer measure time in weeks or years but in sunrises and sunsets.
Welcome to the end. You can run but the horde never stops. Forty eight hours in is a lifetime.
Every story has a beginning, and this is the beginning of the end for most of the world. A world wide epidemic is launched and most of the population are nothing but pawns. Welcome to the end.