MLP: Eve of Discord-1
For centuries, the malignant draconequus Discord ruled over the land of Equestria, terrorizing the natives and wreaking chaos for his own entertainment. Only now, in recent years, have two ponies arisen to fight this creature. The alicorns Celestia and Luna, two sisters, worked together to seek out the Elements of Harmony and use their power to seal Discord away, bringing peace to Equestria.
Or have they?
The aftermath of Discord's rule has left Equestria damaged, with strange creatures roaming about. It is a world where many animals speak, and ponies are the dominant sapient species. They have inherited a world where nature itself has been broken in places, where the rules don't always work, and the repairs will require incredible effort to repair.