The Maximals awaken on Cybertron, unable to remember how they got there. Incapable of transforming, they are hunted down by Vehicle Transformer Drones known as Vehicons.

Seeking out allies, Blackarachnia and Cheetor discover that the entire Transformer population of Cybertron has mysteriously vanished. Rescuing them from a Vehicon attack, Optimus discovers the truth about Cybertron.

Rattrap uncovers a catalyst program that accelerates the growth of Cybertron's newfound plant life. Meanwhile, Blackarachnia discovers the truth about Thrust's Spark.

Having destroyed his world, Optimus must face the consequences before The Matrix.

Now entirely alone, Optimus faces the most unexpected foe of all!