It was a calm day in Ponyville. The sun was shining, the flowers blooming, the birds chirping. The Coronation of Equestria's newest princess was over, as was all the other stuff that came up at the time. All in all, a peaceful day in Equestria. Well, almost peaceful. An unusual and out of season frost has overcome the land. And for once (or twice) Discord isn't to blame. And where is Twilight during this mess? We find Princess Twilight and Princess Cadence in the Crystal Castle, in the room that the portal to the human world of the universe is. It was awhile since Twilight used this portal to stop Sunset Shimmer and retrieve her crown and Element of Harmony. Enough time has past though that there would be residual effects, but the portal wouldn't allow travel.
"So, what do you think Cadence?" Princess Twilight asked. "Do you think Sunset Shimmer found a way to travel without the portal?"
"If Discord isn't involved with this, then it might be possible." Princess Cadence responded. "You said that she put on your crown. She might be experiencing some side-effects."
"Weird. We'd better keep a close eye on Discord just in case."
***Some time later***
"You sure, Discord?" Princess Twilight asked.
"I'm sure, Princess." Discord said. "But if I can locate the source, I'll tell you."
"You'd better. It is crucial that we pinpoint the source of this weird weather phenomenon. Keep me posted."
"Will do."