The Decepticons attack a solar plant making the Autobots appear to stop them, but this is a distraction. The Autobots headquarter is now without protection, giving Laserbeak a good chance to capture Sparksplug without much difficulty.
Laserbeak takes him to the Decepticon's headquarters, where Megatron has teamed up with the evil Dr. Arkeville. Megatron is planning to use Sparkplug as a guinea pig for a new invention of Dr. Arkeville's called the "Hypno-chip", that can turn any human into a puppet. Using this, Megatron will make an army and build a new "Space-bridge" big enough to bring Cybertron to the Earth´s orbit, absorbing the energy from Earth and (subsequently) destroying the Earth.
The Autobots form groups to rescue Sparkplug. One will go to distract and fight the Decepticons and the another will rescue Sparkplug. The operation is a success and the Autobots return to their headquarter for repaires. Sparksplug starts to act strangely, repairing everything even though it´s in good shape.
The Decepticons attack the base and recapture Sparkplug, who has sabotaged the weapons of the Autobots. Spike activates an emergency system of Telatran-1 causing the Decepticons to retreat. When the Autobots are repared, they go to where the "Space-bridge" is located.
Megatron uses the brainwashed people to avoid the Autobots attack directly. Optimus starts another fight with Megatron, who says to Optimus that Cybertron will be destroyed if he doesn´t activate the "Space-bridge". Prime activates it, but discover the lie of Megatron too late.