One thousand years ago, Earth and Equestria lived together in harmony with the only way to travel to the other planet by portal. Some humans moved to Equestria and fell in love and the same thing happen with the ponies moving to Earth.

Humans created machines, the rise of a new age and a start of a war. Causing the two alicorn's to closed the portal forever to never open it again. Until many years later, a human watching season two again got teleported to Equestria.