The Autobots face off against the Decepticons for one last showdown.
The Autobots race to rescue one of their own while tracking down the Decepticon warship.
Megatron tries to persuade Ratchet to help him, while Optimus takes on the Predaking.
While the Decepticons search for parts and equipment for their plans, the Autobots probe a prisoner for information on Megatron's plan.
Megatron looks to step up "Project Freedom" (the use of cloned creatures from earth's history) until the Predaking shows its true capabilities.
Starscream and Knock Out collaborate to experiment on artificial energon, which could destroy the Decepticons and their ship.
Arcee and Wheeljack join forces, while June Darby and Agent Fowler get involved during a mission.
The team must handle the changes to the team and prepare for an attack from the Decepticon's cloned beasts.
The Autobots wage an all-out war against the Decepticon base.
The ultimate hunter is unleashed by the Decepticons. Luckily, a new Autobot joins the fray just in time.
With the Autobots still separated from each other, Wheeljack makes a desperate move.
The survival of Optimus Prime is in doubt after Megatron's destruction of the Autobot base on Earth, while the separated members of Team Prime try to reconnect after being scattered to the wind to prevent detection.moreless
Starscream once again offers up his allegiance to Megatron, much to the displeasure of Dreadwing.
When Smokescreen is captured by the Decepticons, he uses the opportunity to find out the location of the Omega Key. Will this help him locate the other stolen keys?
Knock Out unlocks a new power that allows him to control sound. Meanwhile, Starscream activates the stolen Red Energon and gains super speed. Will the Autobots be able to fight against these new super-powered threats?moreless
Megatron and Dreadwing head to Cybertron hoping to harness the power of the Primes by activating the Forge of Solus Prime. With their plan set in motion, the Decepticons hope to destroy Optimus Prime and the line of Primes forever.moreless
While Jack pairs off with a new Autobot partner, Megatron tries to keep Optimus from discovering the existence of a legendary weapon of the Primes, which could turn the tide of the war.moreless
Silas is given a new lease on life and approaches Megatron with a plan to join the Decepticon ranks.
After Hardshell's attack on Bulkhead, Miko and Wheeljack embark on a quest for revenge.
Bulkhead is faced with life-threatening danger during the last relic hunt.
Ratchet reluctantly calls upon Wheeljack for back-up in his mission to retrieve the third Iacon relic. Upon arriving at the location, the two Autobots are confronted by Soundwave, but they get a one-of-a-kind opportunity when Soundwave's minion, Laserbeak, is disabled.moreless
Optimus Prime travels to Antarctica to hunt down the second relic, but while there he is confronted by Dreadwing and Starscream, and finds himself caught between shifting alliances.
Arcee and Bumblebee go deep into New York's "underground" in an attempt to beat Megatron to the next four lacon relics.
The Decepticon Warship threatens humanity, and Raf, Jack and Miko are the only ones who can stop it.
Bulkhead is trapped on the Decepticon Warship and amid dual tries on Megatron's life.