Not long after the Dazzlings are defeated, things return to normal at Canterlot High. That is until Sunset Shimmer stumbles upon a five-year-old Trixie
After the battle of the bands, Twilight has something on her mind regarding the Dazzlings. Sunset has also had some things on her mind regarding Twilight.
Seeking escape from a painful situation, Princess Twilight decides to take a break from Equestria to visit her friend, Sunset Shimmer, in the human world.
In the future, we'll colonize the solar system, cure cancer, clone the human genome, and build trans-dimensional hoodies that can summon tiny talking horses from an alternate universe. It's pretty snazzy.