The Ultimate Doom, part 1
The Decepticons attack a solar station of a maharadja and the Autobots come defend the station against them. This attack was only a diversion; Sparkplug meanwhile is kidnapped by the Decepticon cassettes from the Ark. Doctor Arkeville, a brilliant evil scientist who works for the Deceptins needs Sparkplug for an experiment. The decepticons flee from the solar station when they hear that their diversion was succesful. Sparkplug is brought to Decepticon Headquarters and Dr. Arkeville places a hypnochip on Sparkplug's neck and with it he can be controlled against his own will. The Autobots have thought of a plan to rescue Sparkplug and go free him. For the first time the Autobots start an attack on the Decepticon headquarters. Megatron is discussing about the delivery of a special cargo with Shockwave, Arkeville overhears them but Megatron refuses to discus the matter. Brawn, Cliffjumper and Windcharger dig a tunnel under the ocean floor to reach Decepticon Headquarters from below. The other Autobots attack the Headquarters as a diversion. The operation is succesful, Sparkplug is rescued. Back in the Ark many Autobots need repairing, Sparkplug helps, he even "repairs" healthy Autobots. The Ark is suddenly attacked without warning, all Autobots start shortcircuiting. Spike discovers that his father disabled the outer perimeter alarm. He activates the firealarm and the foam that comes from the ceiling threatens to destroy the Decepticon circuitry, Megatron orders a retreat. Some time later the Decepticons have finished the construction of three energy pilons. The pilons act as a spacebridge which will transport Cybertron itself into Earth orbit. Earth will be destroyed and the Decepticons will be able to harvest the energy. The Autobots are repaired again and attack as soon as they notice the pilons. Megatron uses an army of human-slaves (all these are controlled by Dr Arkeville) to stop the Autobots. Spike almost succeeds in breaking the effect of Sparkplugs chip but Arkeville increases the effect. Sparkplug activates the first pilon, Thundercracker the second. Optimus Prime stops Megatron from activating the last one. Then Megatron explains the purpose of the pilons; if they are not all activated then Cybertron will be destroyed, because it is already in transport. Optimus Prime has no choice, with a feeling of regret he pushes the button that activates the pilon. Cybertron appears, Earth quakes and storms plague the Earth.