There had been an outbreak of some sort of virus recently, it was infecting ponies all around Ponyville and making them cannibalistic during the first few stages before they turned into Weird- Deformed- creatures that could barely move. You were exploring an abandoned building, hoping to find some sort of curse before you heard the rustling of someone in another room.

"Get back here, before they kill you!"

A blue hoof poked up from behind a door, it was rainbow dash.