Rainbow Dash, fastest flyer in all of Equestria. Her special talent is flying, it's what her cutie mark tells her. After the whole cutie mark thing with Twilight ending up as a alicorn princess, she rethinks why Rarity was moving clouds instead of flying fast. Her cutie mark disappears. She has to rethink what her special talent actually is and why she got a cutie mark in the first place if her special talent was never flying. She also gets to be the CMC newest member. She looses more then she thought.
She also gains more then she meant.

Appledash series.
Takes place after season three episode thirteen.