With Galvatron defeated, Scorponok takes over as new leader of the Decepticons, proclaiming himself Emperor of Terror. Continuing his schemes to destroy the Earth, he is unaware that the Autobots are continuing to seek the weak point in his massive Transtector, though progress remains slow. Sixshot's forces attack Earth under Scorponok's orders, and during his attack on Autobot City Spike is grievously wounded. Chromedome, obsessed with avenging Ultra Magnus' death, is suspended from duty when the other Headmasters depart to face the Decepticons, with Cerebros feeling that he can't be counted on in his emotional state...