When Discord gets invited to a party, the Mane 6 can't make it. So he decides to brainwash Celestia and Luna, making them his obedient chaos-loving minions.

MLP version of Aladdin. Homeless peasant, Celestia, find a magic necklace containing the wish spirit, Discord. And she uses it to earn the love of Prince Solaris.

500 years after Luna's banishment, Celestia in given a wishing stone. She uses it to wish for Luna to be with her angain. But there is a side effect of to this good fortune.