My Little Pony: Friendship is PG-13 is a parody. In it, Twilight Sparkle is sent by Princess Celestia to Bloodville to get the sense knocked into her by five evil ponies. But when Nightmare Moon returns from the moon with an much too drawn out evil laugh and threatens to destroy every other evil pony there is, Twilight is forced to team up with the other five ponies to defeat her. Then they go and adventures and try to kill each other.