For centuries across the universe, the Autobots have battled their greatest foes, the Decepticons. But on Earth, they face a new threat – discovery by the human race. Using their ability to disguise themselves, the Autobots have managed to avoid detection. But now they require the assistance of their human friends to not only help keep their secret, but to defeat the Decepticons once and for all!
While Optimus suffers from amnesia, Megatron manipulates him into joining the Decepticons.
Jack learns that the key to restoring Optimus’ memories lies on Cybertron.
Optimus begins to rebel against Megatron’s commands, while the Autobots devise a risky plan to get their leader back.
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, while Ratchet faces demons from his Cybertronian past.
Wheeljack returns to Earth in pursuit of a new Decepticon, but Optimus finds the rogue Autobot’s operating style to be incompatible with his own.
Airachnid and Starscream struggle for control over an Insecticon warrior, while the Decepticon ranks continue to splinterafter the loss of a key member.
Optimus Prime seems to go on a destructive rampage, while MECH unveils their ultimate plan.
Under threat of military tribunal and thepotential shut down of Team Prime, Agent Fowler has some explaining to do regarding recent events.
Bulkhead finds himself trapped on the Decepticon Warship, and caught amidst dual attempts on Megatron’s life.
When the Dark Energon-infused Decepticon Warship becomes sentient and directly threatens humanity, the Teens discover they are the only ones who can stop it.
Team Prime splits off in a race to beat Megatron to the next four Iacon relics; the first mission takes Arcee and Bumblebee into New York’s subway tunnels.
The second of the relic hunts takes Optimus Prime to the Antarctic, where he engages in shifting alliances between Starscream and Dreadwing.
During the third relic hunt, 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.
While Jack pairs off with Smokescreen to further educate him about navigating the human world, Megatron tries to keep Optimus from discovering the existence of a legendary weapon of the Primes,which could turn the tide of the war.
The Autobots learn of the Omega Keys and the incredible secret they hold, while Megatron takes particularly extreme measures to harness the power of the Primes.
As the race for the Omega Keys grows more desperate, Knock Out harnesses the power of sound, and Starscream the power of hyper-speed.
When the Decepticons take him captive, Smokescreen learns of the location of thefinal Omega Key -- and attempts to retrieve the other stolen Keys from Megatron himself.
Starscream proposes a truce to Megatron, but Dreadwing threatens to stand in the way of his return.
The quest for the Omega Lock takes the Autobots and the Decepticons to Cyberton for an epic battle.
The Autobots question Optimus' leadership abilities when his decision to keep Megatron from claiming both Cybertron AND Earth proves controversial.