So let me guess, something happens to fluttershy accidently turning her into a dragon. terrified of her new draconic appearance, she runs from ponyville and hides in a cave residing in the everfree forest. Discord, being a god of chaos as well as a close friend to fluttershy, senses a distibance in the force and teleports to her location. Once he registers the fact that flutters is now a dragon, he comforts her while playfully joking around and saying the new look fits her well, and eventually encourages fluttershy to come back to ponyville and visit twilight to reverse the spell.