Discord takes Fluttershy to see something chaotic he's made that he thinks will be considered harmless and beautiful -- rain made out of light. Fluttershy agrees, but fears that ponies won't accept it anyway. They discuss friendship, and Fluttershy comes to some unwanted conclusions regarding her own feelings.
Light Rain: This is part of the Canon Compliant to 4th Season series and one of the Princess Twilight Sparkle Endcaps, if you view this chapter alone. Stop here if you want a happy ending.
Two Months Later: This is the lead-up to Elements of Opposition.