Braeburn was sent by a cloaked figure to find a dusty and old oil lamp inside a cave. And this was just the beginning of the story of how the life of the simple applebucker changed forever.
After escaping Aperture Science, Applejack wakes up in a strange train, which stops in a place she doesn't recognize. The only thing she recognizes is Celestia's face in big monitors all over the city.
Sponsored by Prince Blueblood, Twilight Sparkle starts a project to visit a new planet discovered by her, TS-01. But things goes south as soon as the spaceship lands, and only Future Twilight can save the day.