This story is a sequel to Trixie Times Two

Muffins at the End of the Universe II

Being stranded in a crashed pod, millions of years away from civilisation, with no hope of ever getting back, is starting to have a negative effect on Twilight Sparkle's general well-being. Not helping are Trixie's attempts at mastering a teleportation spell, with varying degrees of success, or Doctor Whooves' latest crazy invention which goes wrong, with horrifying consequences, temporarily elevating Derpy to alicorn status.

But things are about to get a whole lot worse. Derpy is still unable to control her new powers (in spite of Trixie's perfectly faultless teaching) when a familiar enemy reawakens in the form of a giant muffin monster.