Patient Zero

Both Princess Celestia and Twilight was together at the party for the yaks from Yak Yakistan one autumn evening in Ponyville. There was games and stands from all over Ponyville that day. Horny Twilight with a hornboner inflated a purple, round, big, shiny and clear balloon she got at a stand as Princess Celestia and Twilight pushed to. Despite that the two nervous horses were very scared of balloons did they feel their horns getting warm by pushing to the hard shiny balloon too. After that had Twilight been sucking Princess Celesti’s very long hot horn in long time until the two horses reached their climax. Then were Princess Celestia giving Twilight a long hornjob too, as her lenghtened horn tickled. As Twilight masturbated did she see how the alicorn gave a yak a long horn massage with a loudly creaking yellow shiny balloon in the quiet town until the evening. The party for the yaks had first been ending at night. Later that night had Twilight been falling asleep in her new castle outside Ponyville. Twilight had a nightmare that night. It looked like something that could take place in the future. Twilight was in Ponyville long out in the future. It was 1000 moons since that the ponies had declared peace with the yaks. A war had broken out, as a virus had spread out all over Equestria. The ponies in Ponyville and the Mane Six was fighting against some creatures with sharp bloody teeths, and bloody cuts on their bodies.
 
“It can’t be the yaks who had send these creatures.” Twilight told her friends.
 
“That must be the virus who made the creatures we are fighting.” Rainbow Dahs said to Twilight.
 
Then were Twilight waking up after that nightmare. Twilight could remember that there was a prophecy from one of her books about a future virus outbreak that had been spread all over Equestria by a lab that suddenly had been abandoned.