the mind realm is seeping into the realm of the living, and there is only one creature can return it to normal. Edahs Rentuh, a nomad changeling is the only way to contact the heroes of the past to help combat the villians of the future. Will Edahs be able to repair the mind realm or will the spirits held there run amok in Equestria.
Note: this story mostly takes place during Luna's time on the moon, but goes through the series and beyond.