How did the apocalypse even started? No one knows, and so are you. Somehow, you're alive and now on an outing for food and supplies. No zombies around, yet your gun is still in your hand as you make your way into the subway.

As you get there, there's a lot of corpses. Mostly, the animal ones, but.. who did this? When you got closer to the dead bodies, you hear loud growling, and then a tall body bumps into you, making you both fall on the ground, as that zombie creature tries to bite you.