The Cutie Mark Crusaders haven't let up in their quest for cutie marks. One day, their planning is interrupted by a shooting star in the night sky. They agree upon a wish, rationalizing that if they all wish the same thing, it would be sure to come true, right? Of course!
Around the same time, a form slowly descends to the Ponyville Square, almost as if gently placed there. Despite the snow falling around him, the sleeping human doesn't stir in the suddenly changing environment. And he definitely doesn't go unnoticed.
Celestia seems reluctant to meet this new inhabitant, and gives Twilight some coordinates and very specific directions to teach this newcomer some of Equestria's history before taking him there. Of course, without the human ever being aware of the plans. What fun would that be?