Imagine that you found a time machine and travelled back to Medieval England. Unfortunately, you land at a time of great crisis. It's the year 1348, and the Black Death has struck all over Europe.
While walking through the forest alone, you come across a time machine.
Curious, you decide to step inside to see what it's all about. Before you can react, the door slams shut. You're trapped!
You hear a strange whirring sound, and the time machine begins to move faster and faster and faster. You feel like you're going to be sick!
Suddenly, the machine stops. All is quiet, all is still. You pull the door open and light floods in.
You find that you've landed right in Medieval Europe! You exit the time machine and find that everyone is sick on the streets with a seemingly deadly disease.