In the year 2011, the Decepticons are back, and they've got added power in the form of the newest addition to the Transformers' war—Headmasters!

After learning of the origins of the Headmasters and the planet Master, the Autobots race to recover the missing Matrix.

With the missing Matrix recovered, the race it on to return to Cybertron and secure the Autobots' control of the planet.

When Soundwave is resurrected as Soundblaster and Cybertron is attacked by the Madmachine, the Autobots respond by recreating Blaster as Twincast.

The Autobots head for planet Beast to aid the native Beastformers in repelling a Decepticon invasion.

Galvatron sends a gravity-warping meteor on a collision course with Cybertron, and only Daniel can save the day.

Scorponok lures the Autobot Headmasters into a trap on the planet Praum, where they must call upon all their training to survive.

The Trainbots take centre stage when six shadowy figures attack countries all across the world.

When Vector Sigma develops a powerful new alloy, the Decepticons initiate an all-out strike against Cybertron to claim it for their own.

The end looms for Cybertron as Scorponok's plan to secure power nears fruition...

Scorponok takes command of the Decepticons, and the Autobot Headmasters must thwart his plan to seize control of an Earth satellite that can harness the energy of the sun.

The Autobots race to rescue a Peruvian village when the Decepticons cause a nearby volcano to erupt.

Fortress must reveal his ultimate transformation when the Decepticons attack San Francisco with a carnivorous plant.

The Autobots attempt to stop a Decepticon plot to destroy the entire planet Mars.

With Fortress Maximus out of power and the destruction of Mars looming ever nearer, Scorponok reveals his true face at last.

In the middle of Scorponok's coronation as the new Decepticon emperor, the Autobots attack and an old enemy makes a surprising return!

The Autobots respond when an emergency request for energy comes from the other-dimensional planet Sandra.

Spike attempts to negotiate peace with Galvatron, but all is not as it seems as the Decepticons, now joined by the Horrorcons, plan their next evil scheme.

When the Decepticons attack the planet Hive, the Autobots have to prove their good intentions to the planet's inhabitants before they can save them!

The Decepticons' newest target is the energy-rich Twin Star planetary system, but before the Autobots can come to its defense, the Headmasters are going to have to settle their own arguments first!

The Transformers' interplanetary travels bring them to planet Darhos, where the Autobots aid desperate prisoners in overthrowing the Decepticons and the planet's decadent ruling class. But that's not all - the key to defeating Scorponok is also hidden on this world!

The Headmasters come to Highbrow's rescue when the Decepticons invade the beautiful world of Paradise.

The Autobot and Decepticon clones enter the fray as both factions search for the hidden proton energy of Pirate Planet.

Whaddaya think happens?

With the true extent of Galvatron's master plan revealed, the Autobot Headmasters face the Emperor of Destruction in a final battle in the Arctic.

With Scorponok established as leader of the Decepticons once more and Spike on the verge of death, the fate of Earth hangs in the balance, and only Chromedome can save the day by discovering the long-held secret of Scorponok's weak spot!

With the Decepticons having fled Earth, the Autobots begin the clean-up operation, but things go awry when a discarded bomb threatens the planet's safety. Can the newest Autobot arrivals save the day? And what are the Decepticons planning now?

The birth of the Targetmasters heralds another heartbreaking loss for Chromedome when the Autobots pursue the Decepticons back to planet Master.

It's Chromedome and Daniel to the rescue when the Decepticons kidnap Wheelie and ransom him in exchange for the secrets of the Master Sword. But are the Autobots ready for... the Duocons?!

It's a race against time for the Autobots as they search for the Decepticons' hidden base before the Zarak Shield can be completed.

The Autobot Headmasters team up with the young warriors of planet Master for an attack on the Decepticons, but when things go wrong, the Master Sword and the Zarak Shield finally meet in combat!

Separated from their comrades by an asteroid storm, Daniel and Sixshot are thrust together when they become stranded on a dangerous planet, and Daniel discovers that the ninja may not be all that he appears.

Chromedome and Sixshot's rivalry explodes when the ninja challenges the Headmaster to a one-on-one duel in the asteroid belt.

Chaos erupts on Earth when the Decepticons return and massive "Death Towers" appear in strategic locations across the planet. Can the Autobots stop Scorponok's final attempt to destroy the world?

With Death Towers all over the planet releasing energy that threatens to tear the Earth apart, everything comes down to a climactic battle between the assembled forces of the Autobots and Decepticons at the North Pole, where Fortress Maximus and Scorponok have their final showdown!