(First submission, I'll continue if you guys feel that It should go on and criticism is valued, tell me what's wrong and what I could have done better! Also, if the info seems a little outdated, I'm new to the fandom and only halfway through season 1.)

The economy in ponyville was excelling. Business was booming for applejack, especially from those paranoid ponies, speaking of “the end” being near. With all the money, she could remodel sweet apple acres, and get Big Macintosh a new cart to pull, one that doesn’t put any strain on the back. Pinkie pie had enough money for well…whatever she wanted. Her new line of canned goods, those which were said never to expire, were selling incredibly well. “Feed it to your kids, and your grandkids!” Was pinkie’s favorite advertising line. Why was everypony so jittery about something that wouldn't happen?

Fast forward a single day. Somepony had gotten their hands on some sort of drug that was said to be a "psychical enhancer" of some sorts. Now, half of the town is eating each other, and everyone else who was smart enough to know what was going on has hid in their shops or homes–whichever they were in at the time.
Note: this is just my writing, if you want the ACTUAL story, with over 4 people working on it, follow the gdocs link:

https://docs.google.com/document/d/12mjk3uuOE-B0cHEoVhYgzo0iNkMZCObFUBm-G29gKHc/edit?usp=sharing