The other universe has taken over. Nightmare Moon has returned. She has not returned alone. She has also brought the Stones Of Evil and they have the same power as the Elements Of Harmony. The Mane 6 have been taken over by their evil sides all of them except for Twilight. Twilight is forced to flee Ponyville and stay in the Everfree forest. She runs into Zecora, who tells her the Prophecy of The Falling Sun.