Peace has returned to Canterlot High School and nobody fears Sunset Shimmer since the Battle of The Bands, but a new threat know as Decepticons, lead by Megatron, wants to conquer Earth and the rest of the Universe. Now Twilight Sparkle and the Rainbooms must join with Optimus Prime and the Autobots in their galatic civil war that last eons. Will the heroic Autobots prevail and bring peace to the Universe or will the evil Decepticons win this war and conquer Humankind?