Things are stirring, dark things that hail from the olden days.
Torn by wars, the country of Equestria is a singular beacon of light amidst a dark world, filled with Hive, Shadow Magics, and a Shattered Empire. Amid all of this, Twilight, whose magical power could spell both disaster and salvation, has set herself on a dangerous path.
An Alternate Universe. Canonically, this starts before everything in the show began. This is inspired by numerous sources, but primarily MLP (duh), Dungeons & Dragons, Destiny, and a conglomerate of other videogames and movies.