Minuette has an imaginary friend that lives in her mirror. Nopony ever talks about it, but she doesn't really hide it, either. The thing is, her imaginary friend is very real. And he's trapped.
After being left behind in the badlands after her expedition is attacked by a dangerous monster, Twilight Sparkle must survive a hostile, alien environment. Lucky for her, she has some help from one of the natives: A curious changeling named Thorax.
(Set after season 6) Chrysalis has been struggling to survive in the aftermath of her hive's reformation. By pure chance, a resident of Ponyville may be her best chance for survival, and possibly even redemption.