The Mane Six failed to defeat Discord. The Friendship Reports Celestia tried to send back were all hijacked by Discord. For 10 years Discord has ruled Equestria in age of endless chaos and insanity. But then, the new Dragon Lord shows up in Ponyville, the Chaos Capital of the World, to beat the Draconequus down in a one-on-one fight unlike any that has ever been seen or will ever be seen again.

[NO gore, only a little blood]