We begin on Cybertron where Galvatron pronounces himself the harbinger of the wrath of the demi-god, Unicron. At least, that is his declared mission - the bellicose one sees himself as more than some glorified messenger boy. Back on Earth, Optimus Prime and his capitulated crew grow impatient as they await the decision of Scorponok following their drastic submission. Can Autobot and Decepticon fight side by side? A big spanner in the works approaches in the shape of Shockwave and his merry men...