Three years ago it swept through the world, devouring everything in its path. It changed them, tore them and made the dead rise. There was no response from the military. No nation wide announcements. No government statements. Not even news. Nothing. We didn't know what hit us.
Three years later we're all that's left. The last dregs of humanity that refuse to die. We've built a fortress. Inprenatrable. Invincible. We fear no threat but the inside.

The last standing hope for humanity.

In the dead of night there's a shout from below. The watch guard woke from his restless nap. In the spot light stood the impossible.
Humans.

We thought we were all that was left. Now three human survivors knock on our door. What do we do?