Princess Twilight Sparkle finds a odd tome in the Crystal Castle library unlike any other. Spells that stretch the imagination enclosed in it that she simply can't resist. However, she wasn't prepared for the spell she cast to bring a strange being into their world. It's up to her and the others to help the new comer adapt to their society and ways of life. Whether it likes it or not.

Also, a secret that only Princess Celestia and Luna know of changes the views of everypony causing a rift between Princess and commoner alike. Eventually, things go from bad to worse when an evil thought contained forever reappears and threatens to destroy everything the ponies hold dear. Can the new arrival help them push back this ancient evil? Or is the world of Equis doomed forever?