Galvatron, Cyclonus and Scourge are the three future Decepticons from the year 2006, on Earth now to build a weapon that will destroy their foe - Unicron. Out to thwart their plans are the future Autobots, (also now in 1986) Kup, Hot Rod and Blurr. Ultra Magnus is the warrior from the Transformers' home planet of Cybertron, who has come to Earth to learn the fate of the missing Autobot leader, Optimus Prime. The fates of our many and varied characters begin to more fully intertwine as the full story behind Optimus Prime's disappearance is finally revealed...