Cybertron's arrival causes disasters on Earth, leaving the Autobots to battle both the Decepticons and Nature.
- Japanese title: "Day of Destruction - Part 2"
- Russian Tv dub title (6th channel): "Окончательное уничтожение. Часть 1" ("Final destruction. Part 1")
As Cybertron arrives into Earth orbit, storms and earthquakes begin in earnest. Sparkplug celebrates, despite Spike's attempts to make him see reason. Starscream rallies the Decepticons to attack the Autobots, but the sudden violence of the elements has both the Autobots and the 'Cons disoriented.
Starscream berates Megatron for allowing the Autobots to escape, but Megatron brushes off the criticism...with a mere choke of Starscream's throat. The human slaves rush away in terror as Wheeljack notes they look like they've just woken up from a bad dream.
Doctor Arkeville realizes that the disrupter wave interferes with the hypno-chips' control signal and works to correct it, but he will need more "materials" to modify the chips. Megatron contacts Arkeville, who is informed of the situation. After a little experiment on Sparkplug, Arkeville is convinced that he has solved the problem, and Megatron promises that he will have all the slaves they need to gather the energy for Cybertron.
Heading back to base under severe weather conditions, Bumblebee and Spike get separated from the group. Spike is still in a bit of a funk over his dad working with the Decepticons. An earthquake causes a fissure in the ground, which Bumblebee falls into while Laserbeak arrives and takes Spike. Hound, Bluestreak, and Windcharger arrive, rescuing Bumblebee and Spike.
At the Decepticon base, Megatron begins sending Seekers to transport energon cubes to Cybertron. Doctor Arkeville is displeased, as they are using his slaves as shields against Autobot aggression. Arkeville warns Megatron the remember their deal: He gets Earth after Megatron is done repowering Cybertron. Megatron promises to keep his word...but does not specify how much of Earth will be left. But even Megatron has his troubles with the violent storms. At Decepticon headquarters underwater, violent tsunamis destroy the base's entry tower and cause flooding.
Returning to the Autobot base, the Autobots debate how best to handle the situation and decide to send the Dinobots to prevent as much destruction as possible. At first, Grimlock could give a frag about the Earth's destruction, until he's reminded that he'd be on the planet at the time.
At the Autobot base, Spike and Optimus discuss why Sparkplug would work with the Decepticons. Just then, the volcano becomes active. Several Autobots are ejected into the air, but Skyfire manages to catch them. Heading back into the volcano, Ironhide manages to cover the lava with an avalanche. Elsewhere, the Dinobots are hurrying to prevent a tidal wave from reaching the shore.
Meanwhile, Prime learns that Sparkplug was taken to Cybertron during energon shipments. Spike overhears and asks to go to Cybertron in order to save his dad and learn how the Decepticons are controlling their slaves. Optimus agrees. Skyfire, Wheeljack, Brawn, Trailbreaker, and Bumblebee head to Cybertron with Spike. As usual, Spike falls into a trap and needs rescuing by Brawn and Bumblebee. After they sneak into Shockwave's fortress, they discover information about the hypno-chips, but Sparkplug arrives and sounds an alarm.
Original airdate: November 10, 1984
Written by: Earl Kress
(Numbers indicate order of appearance.)
"The Decepticons will triumph. Ha ha ha ha! Join me, Spike. Join the conquerors!"
"Look, I told you. Don't call me that!"
- —Sparkplug adds to Spike's psychological wounds.
"That'll teach you to play with fire, Blundercracker!"
- —Jazz, clever as ever.
"Cross me again Starscream, and I'll reduce you to titanium fragments."
"But we had the Autobots disoriented. We could have eliminated them."
"We'll do that at our leisure when our more important work is done. You have had the only warning I intend to give."
- —Megatron and Starscream bicker, again.
"Creating a mindless slave is simplicity itself, thanks to the brilliant complexity of my hypno-chip."
- —Doctor Arkeville to Rumble. The real irony is that Rumble is probably more advanced than anything Arkeville could ever create.
"That ought to cook that tin foil turkey."
- —Bluestreak disses Laserbeak.
Optimus: "Look at the monitors! You must help stop these disasters."
Grimlock: "Uh, me Grimlock not care whole planet fall apart. Make no difference to me Grimlock."
Wheeljack: "With you on it?"
Grimlock: "Eh, hadn't thought of that."
- —Optimus Prime and Wheeljack convince Grimlock to help.
- This episode is subtitled "Search" in scripts and other official materials.
- Spike isn't wearing a helmet when he tries to help Bumblebee climb up the fissure. However, he's suddenly wearing one just before he's captured by Laserbeak.
- Grimlock's head is the old design when he just shows up with the other Dinobots, but it changes to the new design when he's talking to Optimus Prime and Wheeljack.
- On Cybertron, the font in which the words "Hypno Chip Control" are written changes between shots.
- As the Autobots drive through the stormy weather, Jazz's tractor beam doesn't stay lined up with the character cels consistently.
- When Spike and the Autobots board Skyfire to head to Cybertron, Ironhide is shown running up Skyfire's ramp even though he never goes to Cybertron
- Apparently, the Dinobots still live in a closet on the Ark. Skyfire is also present. All of these heavy-hitters might have been useful in the last episode, when the Autobots were getting their butts kicked.
- If Windcharger's "out of energy" after using his tractor beam to pull Bumblebee out of the gorge, how does he have the energy to transform and drive back to Autobot Headquarter? It really should be him, not Bumblebee, that's carried back by Hound.
- Why would choking Starscream get him to shut up?
- The "skin" of the Transformers seems to be able to endure the heat of magma for at least brief periods.
- Prime finds Spike hanging out in the repair shed from "More Than Meets The Eye"; this marks one of the only episodes in which that building appears.
- This episode also establishes that Cybertron's size is comparable to the moon, given that it can orbit Earth.