Derpy's life has been short on successes. What was her cutie mark supposed to mean anyway? But something somehow went right with her most precious muffin of all, and she was determined to keep it that way.
Magic is bleeding out of Equestria and into another realm, a realm where magic does not exist. Twilight must stop the flow of magic before disaster strikes. Can the natives of this realm be of help? What's this about a cartoon?
Nearly a year has passed since the events that had brought two realms together. Each had kept the other a secret until now, two worlds separated by a certain cartoon. Finally, both are ready to deal with the inevitable complications.