This story is a sequel to Prisoner and Savior: Part 2

Years later after the Sectaniums have established peace with the UFF and Equestria, another new enemy has risen from the abyss at the northern fringes of the galaxy. Hearing that they will stop at nothing to enslave and destroy everything in their path, Queen Twilight Sparkle sends in her best protege student Luster Dawn to intercept their diabolical plan for domination.

As she ventures into the depths of space to defend Equestria and the other innocent alien races from falling prey to the invaders, Luster Dawn comes face to face against fearsome space pirates, highly paid psychic assassins and bounty hunters, and a traitorous alien faction known as the Fallen Sectanium Confederacy, mercenaries consisting of warriors and soldiers that betrayed their ruler to pursue their own dark path.

Later on, Luster uncovers a plot that the evil Confederacy is planning to unleash a doomsday weapon that even Queen Twilight will not be able to resist against. Can Luster and her alien friends destroy the weapon to save billions of innocent lives or will they all bear witness to its horrendous capabilities?