The Decepticons come to Equestria to obtain all their resources. With the Autobots stuck on Earth, and magic having little effect on Transformers, the Decepticons have little to oppose them. Starscream is pulled out to a different light from seeing the planet and starts to remember how he used to be before the Cybertronian war and little more 'organic' insight of the planet.

Rainbow Dash however isn't going to let her planet go without a fight and she has back up from an unlikely source.