Unicron, a mechanical planet that devours other worlds, approaches the planet Lithone. The mechanoid inhabitants on the planet watch helplessly in horror as their planet is destroyed and ingested by Unicron.
In the year 2005, the war between the Autobots and the Decepticons has culminated in the Decepticons conquering their homeworld Cybertron, while the Autobots operate from its two moons preparing a counter-offensive. Optimus Prime sends an Autobot shuttle on a fuel transport voyage to Autobot City on Earth.
