The apocalypse has been going on for years now, and yet, you haven't seen a single person ever since it started. You were living in a fortress you've created that would shock the zombies if they tried to enter.

One day while you were sleeping you heard a noise. You assumed it was a zombie being shocked, until you heard a deep yell that didn't sound like a zombie. You looked out your window to see a man that was shocked by your fortress and unconscious. He lays on the ground breathing sharply and you decide to drag him into your fortress.