Discord is again ruling over Equestria.
Tired of Discord's villianous rules, the Earth Ponies, Unicorns and Pegasi form the Resistance, resisting against Discord in a endless battle of good and evil.
They finally figure out a way to to live peacefully and happily without Discord, but their beloved Princess Celestia has been captured and hidden by Discord, and they still have no idea where the princess is.
And they also don't know what awaits them in the shadows of the underground.
And Discord is still at large.....