When one fateful search through the Everfree Forest leads Rarity to a secret library inhabited by the spirit of an ancient alicorn princess, she realises that it may be time to start believing in fairy tales.
New spells are fun, and Twilight loves practicing them. An ill-timed sneeze has made her latest spell go a bit out of control, though, and now she's stuck as a tiny kitten, trying to deal with a pony-sized world.
When Twilight was born, her parents weren't who she thought they were. After an incident involving a malevolent entity, that wanted her for dark plots, they agreed to disguise her and send her away... Twenty Years Later, the past repeats itself.