Galvatron who is worn out and without power wanders through the universe. At that time, something shining catches his eye. The voice of Starscream is heard and asks "Have You Given Up? Meanwhile Jungle Planet has gotten caught in Cybertron's gravitational field causing a new crisis to form, and Optimus sets out to confront Galvatron for one final battle.

Representatives of each planet have successively gathered together on Cybertron. The first Space Peace Conference opens with Optimus Prime. Optimus Prime makes a proposal for the construction plan of a new space bridge, but the time has come for old friends to finally seperate.

Jolt and the kids manage to get off a distress call, but Megatron refuses to let Optimus out of battle forcing Vector Prime to lead the rescue team with one big question: will they arrive on time?

The Autobots must convience giant Transformers who are only interested in building new buildings to assist them in their search for the Cyber Planet Key.

The true form of planet Cybertron is revealed as the planet sized transformer, Primus. Jolt is used as the device to connect and relay the messages of Primus, who begins to speak of things that have long since passed.

The Autobots search for Jolt and the kids who have been kidnapped by Sideways and Starscream, but Megatron has discovered new information regarding Unicron's dark power that could alter the effects of the war.

The Autobots divide into teams and journeys to the depths of Giant Planet. However, they face a difficult battle against an attack from a strange underground structure and Decepticon. Lori's party appears and runs into the team of Scourge and furthermore, Thunderblast.

The black hole expands even further and the crisis has approached Jungle Planet. Leobreaker and Snarl wager the leader's throne and challenge Scourge. Meanwhile Lori discovers an image that depicts the past when Giant Planet was concealed. Giant Planet was attacked by a countless numbers of Sideways drones that came from Planet X.

Starscream plots how he can defend his title as Megatron's right-hand man while Thundercracker lures the Autobots into a trap. Meanwhile, Hot Shot tries another attempt to beat Override.

The Autobots begin the search for the missing Cyber Planet Key, but there about to have bigger problems on hand as Megatron is resurrected into the mighty Galvatron.

With the help of their human friends, the Autobots construct a new HQ on Earth, but will Megatron discover their secret base before it's finished...

Bud is taken into space so he can see what the Earth is really like, but trouble occurs when he and Scattershot must be saved while the others are fighting against Thundercracker and Starscream. Meanwhile Red Alert and Hot Shot try to remain hidden on the Race Planet while Megatron reveals himself to Override.

Wing Saber hurries to the space bridge in the sky. However, he was not there in time and the space bridge begins to fall apart due to the battle that had just occurred. Lori grieves that she cannot return to her home world. The Autobots who were not able to return to their original dimension because of the collapse of the space bridge attempt to artificially create a space bridge of their own but only fail. Vector Prime then decides that he must act to save the universe and destroy the black hole.

Galvatron uses his might to pull Earth, the Speed Planet, and the Jungle Planet through space bridges forcing all Transformers to unite and fight against him.

The Autobots attempt to blend in by assuming alternate transformation modes suitible for Earth. Meanwhile, the Decepticons enagage human military forces, and the Autobots are forced to intervene.

Hotshot and Megatron race against Override in an attempt to win the first cyber planet key. Will either win when Crumplezone and Ransack are interferring?

Megatron searches for the Cyber Planet Key with extreme force, while the Autobots try to stop the massive earthquakes that are threatening the city.

Starscream unleashes the ancient Decepticons in an attempt to find Earth's Cyber Planet Key, Optimus leads the Autobots in battle...

The kids are forced to use trickery to keep Sidewways and Starscream from deleting Jolt's memory, but the Autobots are getting closer with every minute.

Although Scourge is the winner of the fight, Scourge's emotion causes him to hesitate. Among such, he encounters by chance Bud, who has formed the Mini-Con Recon Team. Meanwhile, the Cybertron Defense Team shifts into action and takes on Galvatron.

Optimus approaches Galvatron to take the Omega Lock and Planet Keys. However, Galvatron is drawing out the power of the Planet Keys, and Thundercracker, Thunderblast, Ransack, and Crumplezone grow to giant size. In the midst of the battle between the Transformer forces, the Leaders of each planet face Galvatron.

When Cybertron is threatened by a colossal black hole, Optimus Prime and the Autobots give the order to evacuate the planet. However, a mysterious stranger holds one last hope...

The secret history of Earth and Cybertron is revealed with the awakening of monster-hunting Autobot Smokescreen. Meanwhile the Autobots are drawn into a cavern filled with ancient Decepticons...

In order to rescue his brother, Coby decides to go to Giant Planet. But before he leaves, he tries to tell his parents about the Transformers.

Primus tries to use his spark energy to stop the black hole but Starscream interferes by throwing himself into Primus's spark energy, this causes him to grow to planet size. He then decides to take on Primus.