The Key to Vector Sigma, Part 1

Megatron uses the legendary supercomputer Vector Sigma to bring the Stunticons to life.

The Autobots are escorting a convoy of tankers which carry a new superfuel which the government has given to the Autobots. Things have been quiet so far, but Optimus Prime is wary. Prowl thinks that the Decepticons are unaware of the superfuel, when they take that moment to attack. Megatron sends the Coneheads to attack, but they are unable to follow them into the tunnels and canyons on the road. Megatron himself decides to destroy the superfuel, but Smokescreen manages to distract him, while Optimus and Prowl drive Megatron off.

Megatron is furious that the Autobots beat them, and decides to rectify the situation. Rumble is sent to steal cars of various models, and Possum Brown's truck, all of which Megatron alters with Decepticon technology, such as anti-gravity boosters and automatic force fields. Using a remote control, Megatron tests the cars' abilities. Rumble is amazed with their stunt driving, and Megatron decides that it's a good name. Bringing them about, he has them transform into robot mode, and dubs them the Stunticons.

Learning that the Decepticons are making new soldiers, Prime realizes they'll need Cybernetic personalities to truly live, and there is only one way to do that. Omega Supreme takes a group of Autobots to Cybertron, where Megatron is informed by Shockwave that he has located Vector Sigma, the megacomputer that gave the Transformers life. But they will require the circuit key to activate it. The Key is in the possession of Alpha Trion, and the Decepticons head for his lab. After a brief struggle, Soundwave locates the Key and gives it to Megatron.

Arriving on Cybertron, the Autobots hurry to Alpha Trion's lab, only to find a dying Alpha Trion. Ratchet and Hoist are able to save his life, and he explains to Optimus what Megatron intends to do. The Autobots head into the tunnels for Vector Sigma.

In the tunnels, the Decepticons encounter Centurion droids, which Megatron discovers he can control with the Key, and instructs them to attack the Autobots. The Autobots encounter the drones and, unable to destroy their attackers, retreat to a derelict hangar. Heading to Vector Sigma, Megatron activates the super computer, which gives life to the Stunticons: Motormaster, Dead End, Breakdown, Drag Strip, and Wildrider. The Decepticons return to Earth, where the Stunticons are set loose on human roads.

In the hangar, Ratchet and Wheeljack set about repairing the damaged maintenance drones which are scattered around, sending them out to fight the Centurions, with little success. Finally a column of maintenance drones marches off a cliff, and the Centurion drones blindly follow them. The Autobots reach Vector Sigma, learning that it already gave the Stunticons life. Optimus plans to use a series of ancient rockets and have them rebuilt as Earth style jets, planning to fight the Decepticons in the air.

At a human base, the Stunticons arrive attempting to make another attempt to steal the superfuel, and the soldiers believe they're being attacked by the Autobots.

—Smokescreen, as the Decepticons attack

—Dirge, accepting his lot in life.

—Optimus Prime goads Megatron to shoot at the super fuel.

—Race track announcer and Rumble, who proceeds quite literally to take it

—Rumble gives Megatron an inspiration.