It was a normal day in ponyvile. Everyone happy. etc like always. Twilight was in her castle reading with spike, Applejack at apple acres, Pinkie pie at the bakery, Fluttershy at her cottage with her animals, Rainbow Dash acting her normal cool self, and Rarity in her beauty cottage. Starlight had just left Twilight's Castle for a mission to do 10 minutes ago. Hours had pasted and she never can back. Sunset had ran into her. Her body partly cover in weird black goo, her white part of her eyes back. her eyes bright green and sharp teeth..sunset tried walking closer but ended up getting her front hoof badly scratched but managed to run to Twilight's Castle. Knocking fast in fear and worry. Twilight opens it and closes it after she walks in. Sunset Immediately tells her everything..and Twilight Immediately called for everyone to NOT leave their homes/cottages. Rarity had the crusaders and she locked and boarded up her doors and windows. Twilight would send them food now and then when needed. 2 Days went by and a few more ponies had gone infected...and Twilight had stopped sending food to Rarity and The crusaders... suddenly 5 hours later. Smth had barged in through the boarded doors. It was Twilight..she had blood stains had her cheek, chest, and leg...and a serious yet a bit traumatized hiden look in her eyes...

Rarity: in a surprised yet worried tone Twilight! What happened to you!? What's happening!? Are you ok!?

(You're next line: "NO! I'm not fine! I just killed starlight and I've never had to kill a pony Before! I haven't been able to figure out what's happening at ALL! and I'm a princess so everything counts on ME!...this is very stressful...!..)