Humanity's space exploration ultimately took the form of billions of identical probes, capable of building anything (including astronauts themselves) upon arrival at their destinations. One lands in Equestria. Things go downhill from there.
Pinkie Pie finds herself adjusting to a new, hostile world, with a new hostile friend. Can they make it through this new misadventure together, or is it the universe that needs to watch out for them?
Sunset Shimmer has never needed anyone or anything - she had her magic, she had her ambition, and she had intellect. Others just stood in her way or held her down. So what do you do when your plans for world domination fall through?