Everything is perfectly fine in the town of Ponyville until an urgent and unexpected letter sends Twilight Sparkle and Rainbow Dash rushing to Canterlot, straight into the jaws of an adventure neither of them are remotely prepared to face. Their friendship will be tested in ways no villain has yet, and the consequences will be dire for one of our heroines should the duo fail that test.
(Chronologically set in the interim between Seasons 2 and 3; Cover Art by TLATopHat)