"After escaping from the Undead Asylum, the chosen undead made their way throughout all of Equestria to ring the bells of awakening, and get the lord Souls. In their way slaying countless legends from days past, even the mighty Princess Luna, helped by the friends they summoned, they made their way to the Kiln of the First Flame.
And there, hollow, weak and frail, Princess Celestia remains, still keeping the fire alive.
Will the chosen undead sacrifice themselves to keep the Age of Fire alive? Or will they choose to usher in the Age of Darkness? Only the Chosen Undead knows. One thing is sure, however. Only one of them will remain standing after this fight, and only fate knows who of them it is."

This is a little sketch I drew because I had the idea in my mind and couldn't go to bed before I drew it, obviously inspired by Dark Souls.