One day you woke up in a completely deserted city.. Not a single sign of life. But you could barely recall anything. You couldn't remember how you got here or what happened before all this. As you started walking around, looking for anyone or anything that could help you out somehow, you noticed a huge wall that you couldn't see the end of.

As time went by, you started to draw a map of the area, trying to make some sense of this place and what the hell was going on. You had so many questions to answer like is there any way out of here and is there anyone around that you could find..

One day as you're walking around, you hear a sound near you. You freeze and look around frantically. Suddenly, a guy jumps out at you, holding a gun towards you.