The Decepticon ship that shot down the Ark has been found and Megatron manages to find a component containing great power. With this power a danger to everyone, Perceptor, Bumblebee and Brawn shrink down and journey through Megatron's body to get it away from the Decepticon leader.

The episode was rated 8.03 from 37 votes.

Both Autobots and Decepticons are facing tough times as they are in need of the element called Cybertonium. The Decepticons quickly get as much as they need, but the only way for the Autobots to get it is to rely on the Dinobots, who have been unaffected by all this. However, the Dinobots have been getting annoyed with the Autobots lately and leave them.

The episode was rated 8.07 from 27 votes.

While Megatron and Shawn Berger enjoy Decepticon Day in Central City, Spike tries to find video evidence that proves the Autobots are innocent!

The episode was rated 8.07 from 27 votes.

The Decepticons acquire the Key that will give them access to Vector Sigma. After using Vector Sigma, they find the Key is also capable of making organics turn into machines. Megatron prepares to use it against Earth and The Autobots will need new allies in this battle, but their creation will come at a high price.

The episode was rated 8.11 from 28 votes.

The Insecticons become extremely powerful after they consume an energy source. They enslave every Decepticon except for Megatron. The Decepticon leader and the Autobots will have to team up to return the Insecticons to normal.

The episode was rated 8.14 from 29 votes.

Starscream is going to destroy the Earth and take the energy from the explosion to rule the Universe. The Autobots and Decepticons must team up to stop that disaster.

The episode was rated 8.15 from 34 votes.

Galvatron goes into therapy, but it does not exactly agree with him. Every one of the doctors' attempts at treating him fail before they consider using one last option. Cyclonus tries to stop them, however, after learning it would make the Decepticon leader an invalid.

The episode was rated 8.15 from 20 votes.

Being the leader takes it toll on Rodimus and his attempt to relax gets him into a fight, in which he loses the Matrix. The Stunticons escape with it and Rodimus reverts to Hod Rod. At first, Hod Rod is perfectly fine with no longer being in charge, but he soon understands he must get the Matrix back. It will not be easy, though, as Scourge has already seized the power of the Matrix.

The episode was rated 8.20 from 15 votes.

Elita-1, leader of a group of female Autobots causing trouble for the Decepticons, is captured and used as bait to lure Optimus Prime into a deadly trap. However, Elita-1's strange time manipulation technique saves him, but leaves her close to death. Her only chance for survival lies in Alpha Trion.

The episode was rated 8.22 from 27 votes.

Daniel and four Nebulans join with five Autobots to battle the Hive, but the Hive decide to do something similar with a group of Decepticons. Meanwhile, Optimus Prime goes to Vector Sigma to find out the whereabouts of the missing Autobots and encounters an old face, learning the answer and what must be done.

The episode was rated 8.24 from 25 votes.

Megatron and a politician team up to slander the image of the Autobots.

The episode was rated 8.29 from 28 votes.

Both Autobots and Decepticons are facing tough times as they are in need of the element called Cybertonium. The Decepticons quickly get as much as they need, but the only way for the Autobots to get it is to rely on the Dinobots, who have been unaffected by all this. However, the Dinobots have been getting annoyed with the Autobots lately and leave them.

The episode was rated 8.29 from 24 votes.

Starscream, in Scourge's body, attempts to complete three assignments for the damaged Unicron in exchange for getting a new body.

The episode was rated 8.45 from 20 votes.

After capturing Daniel and Arcee and acquiring the Plasma Energy Chamber key, Scorponok and the Decepticons make their way to Cybertron. The Autobots head after them, but Spike and Cerebros stay on Nebulos and come up with a strategy to use a Hive city as a weapon against Scorponok. Meanwhile, the Decepticons and Scorponok begin to threaten Earth and it is up to the Autobots and their allies to stop them.

The episode was rated 8.52 from 33 votes.

The Decepticons acquire the key that will give them access to Vector Sigma. After using Vector Sigma, they find the key is also capable of making organics turn into machines. Megatron prepares to use it against Earth and the Autobots will need new allies in this battle, but their creation will come at a high price.

The episode was rated 8.72 from 29 votes.