Lauren Faust wakes up one day in Equestria and guess what? Celestia and Luna tell her that A: she's the queen and B: they're her daughters. How will she cope? Will she stay or try to find a way back? Oh and she's an alicorn, of course.
After a dozen books and twice as many adventures, there was little that could out-puzzle Daring Do. Rainbow Dash, as always, proves to be the exception to the rule.
Starswirl's last spell swapped the destinies of the bearers of the Elements of Harmony. Now, over a thousand years later, the spell is reversed by Twilight Sparkle.
Rainbow Dash isn't your ordinary pegasus. She has a secret ability that ponies thought only unicorns and alicorns could posses. Magic! Not magic like Twilight's though, Rainbow's is stronger. And dark magic.