Prequel to Lost. (Some chapters are set in the present and others in the past)

It’s been two years since Fluttershy became Lost in the Everfree forest and was rescued by the human mage Grendel, curious to know more about humans beyond what Fluttershy told her. Twilight Sparkle decides to visit the Royal Archives in Canterlot but each trips goes without success. On one of her visits however, she is shown by the Royal Archives Scribe, Quill Pen, a secret room that contains an old tome. As she reads it she discovers that not only have there been humans in Equestria before, but what she and every pony knew about the rise and fall of King Sombra…

...Was wrong

(Cover art done by me.)
(Thank you to Cirrus_Brony for his editing.)