No, no; it's not what you think!

Apple Bloom, Sweetie Belle, and Scootaloo are suddenly aware of their entire home being plunged into total chaos. They soon find out that Discord, the Spirit of Chaos has escaped, and it was all thanks to them.
Suddenly, Discord decides to cheer up the little fillies by letting them hang out and play with his chaos induced daughter... Screwball!

Takes place during Episode 2 of the season 2 premiere; supposedly the day after the class field trip.

Not too long of a story, and each chapter is fairly short.