Twilight discovers she is an old soul, having lived many times yet getting further and improving the world each time. Now an alicorn, she has new options to explore: including remembering, but at a cost. Luckily, Discord is there to help her.
Twilight has been given the opportunity to study under Star Swirl the Bearded. But... how is it even possible? And how did nopony realize who she really was?
After seeing what happened when she accidently changed her friends destinies, Twilight is curious about about the 'what if'. Like, for example, what if Luna had ponies a thousand years ago who noticed her.