My Little Pony: The Revenge of Unicron is a new movie.
Death of Princess Twilight
Twilight engages Thunderwing and two Terrorcons; though Twilight injures one Terrorcon and kills the other, she is killed by Thunderwing.
The Origins of Primus and Unicron
Autobot X explains to Starlight, Trixie, Thorax, and Discord that thousands of years ago, the two brothers, Primus and Unicron arrived on Equestria on an exploratory mission. The brothers had come to build a Star Harvester, a device which can create Energon, the Transformers fuel, by destroying suns. The brothers had a single rule of never destroying a star with a living bearing world, but one of the brothers, forever known as Unicron, despised the ponies and tried to activate the machine. Primus was able to defeat his brother and stole the Dark Spark, the key needed to activate the harvester,
- This film is entirely based on Transformers: Revenge of the Fallen.