Starscream discovers cloning technology just as Airachnid readies her Insecticon army to attack the Decepticon ship and destroy Megatron. Bulkhead, who has no idea how he ended up on the ship, gets unwillingly caught in the middle of this mess.
A rookie Autobot arrives on Earth, but he seems to be way too eager to fight the Decepticons, much to the annoyance of the other Autobots, especially the crippled Bulkhead, who is unable to go to battle.
Frustrated by his failure to retrieve and protect the Omega Keys, Smokescreen leaves the base and is captured by Soundwave and Laserbeak. Both the Autobots and Decepticons learn the location of the fourth and final Omega Key.
The Autobots and Decepticons race to find the Omega Lock which can restore life to their home planet of Cybertron. The Autobots have to use every lethal weapon in their possession to stop Megatron and his troops from reformatting their planet into their evil image.