Set in an alternative reality where Nightmare Moon returned before the Mane Six were born and could eventually use the Elements of Harmony against her, the story follows a world where Princess Celestia has been deposed by her sister and claimed the throne of Equestria, entering into a diarchy rulership with Queen Chrysalis.

A period of prosperity began, spanning over four decades, as Equestria grew to become one of the worlds most powerful countries. An experiment to produce more magical energy to fuel the surge in magic technology resulted in portals forming, ripping countless creatures from their native worlds and trapping them in Equestria. The Queens would open their arms however and accept any creature which was pulled through to their world and in turn, this led to technology advancing faster than it would naturally, these beings from other worlds bringing with them new ideas and knowledge. However these beings would also stoke the anger held beneath the surface. In time, the change these beings brought would lead to riots against them and the Queens. The diarchy held their ground, hoping to stop the violent protests against their new citizens and spread the law of equality between all creatures.

Equestria's internal issues persisted for many years till finally the kingdom became fractured. Dividing into bickering City states, Confederacies and alliances, Equestria has begun fighting a civil war. This has become yet more complicated as neighbouring Abysinnia and the Griffin Lands hope to either prosper from the war or remove Equestria completely, after living in its shadow for decades. In only two years, hundreds of thousands have died. Though the heart of the conflict still remains near solely within Equestria's borders, it seems to expand, its impacts being felt across the world and forcing even distant countries to make a decision on what role they will play in the war.