Discord had been invited to a fancy party in Canterlot, and he's allowed to bring guests. But none of the Mane 6 can make it. So he goes to ask Celestia and Luna to join his. But when they say "No", Discord decides he won't take that for an answer this time. He thinks the Royal Sisters are just being party poopers. So Discord simply uses his magic to brainwash Celestia and Luna as he prefers, making them obedient minions, who think like him. With the pair of the new chaos-loving Celestia and Luna obeying his commands, Discord finally has his party pals. He plans to have as much fun as possible at their expense, while teaching them a lesson. But, even after the party ends, Celestia and Luna will never the same again. Permanent changes will be made to Equestia's favorite princesses.
Includes: Brainwashing, embarrassing outfits, public exhibition, ponies as pets, magic trick, pranks, and the possibility of disco.