Long ago, when Princesses Celestia and Luna both ruled together, a war was fought in the shadows between Luna's Brotherhood of Assassins and Celestia's Order of the Knights Templar. Blood was spilled across Equestria until the banishment of Princess Luna, and the Brotherhood went into hiding, while Celestia and her Templars gained complete control of Equestria. The return of NightMare Moon and rebirth of Luna brought the Brotherhood out of hiding and the war between the Brotherhood and the Templars began once again. The Brotherhood's targets are all known as the "saviors" of Equestria, the bearers of the Elements of Harmony.