Gloriosa decides to honor her grandparent's legacy by converting Camp Everfree into a naturist resort. Timber Spruce is skeptical about the idea at first.
After a nasty breakup with Sunset Shimmer, a Twilight Sparkle discovers a way to travel to parallel universes. Millions of Sunset Shimmers who've never met her. It was a perfect plan...until it wasn't.
Sunset Shimmer visits the Castle of Friendship, and inadvertently discovers something that Twilight would normally keep hidden under her bed... except that since this is a pony princess we're talking about, it's nothing remotely resembling normal.