Pinkie Pie and Twilight Sparkle are tourists on Earth, and haphazardly decided on taking a Human with them home from the vacation. Of course, what could possibly go wrong, so long as you followed the guide, to the letter?
I just recently started to write stories directly towards the FiM actively, though I have been writing for years, publishing numerous stories at Mibba and the eventual pony story, as far as to the MLP