After Nightmare Moon's reign over Equestria, young fillies became inspired by her attempts, Fillies began to launch hopeless attempts to take over Equestria, to the point that they caused their own deaths, The adults were more successful, One by one, they were all stamped down, Best friends betrayed each other, Equestria was getting hard to run, and often, the sun would stay up until midnight, because Luna was so busy stomping out everypony who dared to turn evil.
The Elements of Harmony prevailed each time, but then, One filly did the extra miles, Diamond Tiara, and assassinated Twilight Sparkle, and Shining Armour, This was a big blow to the empire, but no-one knew who did the assassination. Diamond Tiara got away, being a 'innocent little filly who hates war,' Later, Diamond Tiara was found sneaking around secret passages, to the back of Celestia's throne, holding a dagger. Celestia was not told the truth who was trying to kill her, but Celestia knew, after Appleloosa's Massacre, Twilight and Shining Armour dead, several fillies turning evil, that for Equestria's sake, Equestria must be destroyed, Ponies sent to the time stream and reset, and finally, Re-build all of equestria from the soil.