Continued in: My Little Apprentice: Apogee
Twilight Sparkle learns that the trust and goodwill of the Princess isn't always a good thing as she's given the trust of an important assignment. When that assignment turns out to be long-term, how will she handle taking care of a filly of her own? How will she handle this strange new filly, who proves to be much more than she appears. As a matter of fact, she seems to be from an entirely separate universe.
Meanwhile, Second Chance has kept only enough of her memories to know that she isn't what she should be. The wonderful world of Equestria has its own dangers, and she seems to have a knack for attracting trouble. The more of her memories return, the more she wishes she could just forget. But you can't forget when all of Equestria depends on you remembering.
Only one thing's for sure: The longer Twilight keeps this strange filly in her care, the stranger her own life will become, and things she thought she knew about Equestria will unravel before her eyes. Strange ancient devices, an eccentric mint unicorn and her so-called "Equestrian Precursor Society" are only the beginning for Twilight Sparkle as she begins a journey of her own. She too may wish she could simply forget. Unfortunately, it's too late for either of them.
When a remarkable spell summons a human mind into the body of a unicorn filly, Princess Twilight Sparkle does the only thing she can think of: Take on an apprentice.
When Equestria is threatened with an invasion of all its greatest enemies, Celestia and Luna are forced to turn to the only ally with a chance of helping them: Humans. The only question left now is whether any of Equestria will be left to save.
Second Chance has her memories back, and now the responsibility of an entire civlization rests on her shoulders. Can she save her old world without betraying her new one?
Ten years have passed since the awful war that nearly destroyed Equestria. Humanity and ponies now live together in harmony. Yet for Sweetie Belle, not all scars are so easily healed.