In part two of the three-part "The Rebirth," the Nebulons thwart the Autobots' Headmaster process by imitating it, using evil Decepticons in the place of the good Transformers. A tug-of-war ensues between Autobots and Decepticons, with both sides briefly gaining and losing the upper hand. Meanwhile, Optimus Prime merges with supercomputer Vector Sigma to figure out a solution to the problem on Nebulos. Written by David Wise, "The Rebirth" first aired in America on November 10, 1987. ~ Hal Erickson, All Movie Guide