After Fluttershy bravely reasoned with Iron Will's groundless assertive training, and much of her aggression took upon innocent ponies including Rarity and Pinkie Pie, Rainbow Dash decides to go over to Fluttershy's cottage to have a private conversation about it all. As much as Fluttershy admits to being "mean" towards her friends, she can not help but regret her second persona having hurt them.

Rainbow Dash, on the other hand, is not surprised with the incident at all, and reminds her childhood friend that she always had this darker side since she was a filly, and Rainbow herself was the witness accountable.

The question now is, how would Fluttershy respond to such unsound truth?

Set after S2 E18 "Putting Your Hoof Down".