The fourth and final season of the original
Transformers cartoon series is actually a three-part miniseries titled "
The Rebirth." The age-old war between the two rival Transformer factions, the Autobots and the Decepticons, takes the combatants to Nebulos, a planet controlled by evil telepaths. In the course of events, the lines of battle are blurred when, thanks to those aforementioned telepaths, several Decepticons, disguised as good-guy Autobots, infiltrate the other side. As the climax approaches, the fate of everyone concerned rests in the hands of the Autobots' human ally Spike -- with a bit of assistance from the revivified Optimus Prime, head of the Autobots, who has merged his intelligence and resources with the "super computer" Vector Sigma. ~ Hal Erickson, All Movie Guide