Please note: there are some spoilers in the comments.
These documents present the adventures of Twilight Sparkle, Princess of Friendship, in a different human world than the one she found through the mirror.
Strangely amnesiac, Twilight finds herself on a dirty hillside on the outskirts of a human city. She must discover the truth of this strange world, and decide what she brings to it.
Rated Teen/Sex for references to various mammals having sex organs and/or desires.
Rated Dark for safety; it's darker than the show, but not than plenty of young adult fiction.
Other tags intentionally omitted, but if even mentions of shipping annoy you, maybe give this a pass.
Additional tags:
-Unreliable Narration
-Leftist Politics
-Earth History