Twilight Sparkle, the Princess of Friendship, had accidentally caused a deadly virus to infect Equestria. The virus is called Fruit Bat Fever, and is spread through bites. Victims may or may not retain freewill, it's random if they do. The victims will grow fangs, their eyes will turn red with slit pupils, and if they are a Pegasus they will get bat wings. But Twilight is going to put an end to this.... or so she thought.

Out in the deserts of Egypt is a new civilization full of hypnotized Fruit Bat Fever victims, and Twilight has gone there to find a possible cure. But she was captured! Two Egyptian guard-ponies drop her at the foot of a golden throne in a golden pyramid. As she looks up she sees you sitting on the throne. She's shocked, the virus wasn't a virus at all, it was a spell! And you had used it to make the whole of Equestria your hypnotized subjects.

Twilight: "Wha-?! Why am I here?! Who are you?!"