A barrier resides in all our minds, the wall that separates the Light from the Dark. When the wall breaks in a mortal, anger takes over and they lose control for a brief moment, then it passes. But when the wall inside a God breaks the effects are far more drastic and lasting, and evil in its purest form is unleashed upon Equestria.
(Takes place after season 4)
When the Overlord surfaces, he finds the least suspecting world and unleashes absolute fury upon the people and balance of the world's magic. Equestria has magic, people, and has been at peace for centuries. All he needs is a touch of darkness
A new force comes to Equestria, a powerful army that has destroyed thousands of worlds. Guardian must turn the peaceful land into a war machine before the evil descends upon them.