The Cybertrons have built a secret factory in a hollow mountain, away from any human dwelling. To counter the powered-up Destrons, the Scramble City project was started. The project is being carried out under the command of Ultra Magnus. Scramble City is a strategic base which will become a warrior which far exceeds Devastor, a Destron super robot. It will become the strongest weapon the Cybertrons have. The Cybertrons and their human friends work on Scramble City.
As everyone continues constructing Scramble City, the work on it is going well.
Meanwhile, at the underwater base of the Destrons, Soundwave has noticed a change in the magnetic field of a certain area. Megatron wants it checked out, so Soundwave sends out Jaguar, Ratbat and Condor to investigate.
The three Destrons arrive at the point, and find a lot of energy waves being produced. The point they are at is where the secret Cybertron factory is, and Broadcast sees them. He sends out Steeljaw and Amhorn to fight. Steeljaw battles Condor, whilst Amhorn fights Jaguar.
However Ratbat manages to sneak inside the factory, and hides. He comes across Scramble City, which has yet to have been completed, and finds out what it is. He reports this back to Soundwave, who tells Megatron that the Cybertrons are making a fortress. Megatron thinks that is very clever of the Cybertrons, and decides to have the Buildrons sent out to destroy the factory.
Starscream enters the room, and says he will also go on this mission along with Thundercracker and Skywarp. They soon leave the base, and meet up with the Buildrons. Meanwhile, at the Cybertron's main base...
Convoy has found out from their radar that some Destrons are heading towards the factory. He leads Meister, Ironhide, Smokescreen, Warpath and Tracks out of the base to go and intercept them. Not long after leaving the base, the Cybertrons are shot at by the Destrons.
"Convoy! Before destroying the secret factory, I'll finish you off!"
"As usual, only your mouth is high spirited, Starscream."
"Shut up!"
Starscream, Thundercracker and Skywarp fire at the Cybertrons, but Starscream then tells the Buildrons to form Devastor. The team merge into a giant robot, who throws a huge boulder at the Cybertrons. Convoy shoots at him, but Devastor replies with a shot from his laser rifle.
This causes a large explosion that blasts Convoy and Meister back. Ultra Magnus is watching the battle, and sees that the Commander and the others are in trouble. He orders for the Airbots to mobilize.
The Airbots quickly arrive at the battle and knock down Devastor. They transform to robot mode, as Convoy tells Silverbolt he's glad they are here. The Destrons are outnumbered, so Starscream orders a retreat. Thundercracker and Skywarp fly away with him, as the Buildrons transform back to their vehicle modes and also pull out.
Megatron isn't impressed with Starscream's failure, and pushes him aside. He doesn't want to see his face again, but Starscream says that next time he'll drive back the Airbots. Megatron says enough is enough. The Stuntrons will deal with this. The Stuntrons are the Destron's newest potential they have in this war. Megatron contacts the team, and tells them to crush the Airbots and then destroy the secret factory.
The Stuntrons move out, but it doesn't take long for Convoy to realise more Destrons are on the move. He leads out another team, which includes the Airbots, to intercept them. As the Airbots fire from above, the Stuntrons transform and fire back.
Convoy orders for the Airbots to use "scramble power", as the team transforms and unites into Superion. Whilst Silverbolt will always transform into Superion's torso, the other Airbots can become Superion's arms or legs. Superion towers above the Stuntrons and kicks them all over.
The Stuntrons get up and also unite, as they transform into Menasor. Menasor charges into Superion and knocks him down. As Superion leaps into the air, he uses the transformation power-up, as some of his limbs swap places.
However Menasor does the exact same thing. He eventually grabs Superion by his feet and throws him into a cliff. Superion tries to power-up his offensive strength, but Firebolt becomes confused and tries to form the wrong leg. He falls down.
Menasor launches one of his own arms, which transforms and forms one of Superion's legs. This puts Superion into a lot of pain, and he can't seem to stand. Menasor brings out his gun and walks towards him.
Convoy sees that Superion can't fight. He contacts Ultra Magnus and asks if Scramble City is ready yet. Ultra Magnus says they are still doing checks, so Convoy tells him to send Scramble City in as soon as he can. Firebolt wants to get back in the battle, and Convoy says he'll attack at close range.
He moves in and fires at Superion's false leg, which causes it to detach. Firebolt transforms and unites back with Superion, and Superion kicks Menasor off him.
Superion keeps Menasor pinned down, but then the Cybertrons have more problems. The Combatrons have arrived, which fire on the Cybertrons and push them back. They then transform into Bruticus, who helps Menasor get back up.
Meanwhile, Scramble City has been completed. It leaves the secret factory in base mode, but Ultra Magnus has it transform into a mobile fortress. He also has the Protectbots sent out, as Scramble City moves off.
Superion is doing poorly against Menasor and Bruticus, so much so that he has to separate and pull out. Just then, the Protectbots arrive and transform into Guardian. But Guardian doesn't have to do anything, as Scramble City arrives at the battle and reveals a third transformation mode: a giant robot called Metroflex. Metroflex fires a shot at Menasor and Bruticus.
This shot sends the two Destrons flying back. The Cybertrons are all pleased with Metroflex, as Convoy thanks Ultra Magnus for doing such a good job. He also thanks Metroflex for what he just did.
However, there is then an explosion in the nearby sea. The Cybertrons turn around and see that another giant robot has appeared, which has Destron insignias on it!
Convoy wonders what this thing is, as Megatron says it is Dinosaurer, and the Destrons have created him with all of their might. Did his appearance surprise Convoy? As Megatron laughs, Dinosaurer's eyes glow.
Dinosaurer roars, and as the Cybertrons look at the new Destron, Metroflex's eyes also glow. A new battle is about to begin...
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