Megatron manipulates the impaired Optimus into joining the Decepticons.

Optimus Prime leads a strike team of Autobots on a mission deep into Decepticon territory.

Optimus begins to rebel against Megatron's commands.

When Bumblebee loses the ability to convert into vehicle mode, he begins to question his worth to the team.

Bumblebee discovers that the unlikely alliance of MECH and Starscream are behind his recent woes.

Wheeljack returns to Earth in pursuit of a new Decepticon.

Airachnid and Starscream struggle for control over an Insecticon warrior.

Optimus Prime seems to go on a destructive rampage, while MECH unveils their ultimate plan.

Agent Fowler has some explaining to do regarding recent events under the threat of military tribunal.

Bulkhead finds himself trapped on the Decepticon Warship, and caught amidst dual attempts on Megatron's life.

A Dark Energon-infused Decepticon Warship becomes sentient and directly threatens humanity.

Team Prime splits off in a race to beat Megatron to the next four Iacon relics.

The second of the relic hunts takes Optimus Prime to the Antarctic.

The disabling of Soundwave's deployer creates a unique opportunity for Ratchet and Wheeljack.

The final relic in the hunt may prove more deadly to Bulkhead than the Insecticon warriors who pursue him.

Miko and Wheeljack embark on a quest for revenge.

Arcee is reunited with an old friend, and together they uncover a Decepticon plotengineered by Shockwave.

Starscream goes on a quest for Red Energon while a new Autobot joins Team Prime - but is he what he seems?

Silas is given a bizarre new lease on life, and approaches Megatron with a plan to join the Decepticon ranks.

Jack pairs off with Smokescreen to further educate him about navigating the human world.

The Autobots learn of the Omega Keys and the incredible secret they hold.

The race for the Omega Keys grows more desperate.

When the Decepticons take him captive, Smokescreen learns of the location of thefinal Omega Key.

Starscream proposes a truce to Megatron, but Dreadwing threatens to stand in the way of his return.