The peace treaty between the Autobots and Decepticons is put to the test when a new threat arrives bringing a war from another reality.

The Autobots raid the Nemesis, believing Megatron has the Allspark, while Starscream creates a terrible new army.

A mysterious clue from Bumblebee’s memory leads Windblade on a treacherous journey.

As one of Wheeljack’s inventions wreaks havoc on The Ark, Bee tries to figure out what he saw on the Moon.

During its journey from Cybertron, the ARK’s Energon supplies run low and the desperate crew is forced to enter stasis.

Optimus and Megatron finally locate the Allspark, but will need to pass its guardian's trials to claim it.

Realising that Bumblebee’s memory is in bad shape, Windblade must resort to extreme measure to try and help fix her friend.

In the series finale, the Autobots and Decepticons face the Other One, a powerful version of Megatron from an alternate universe.

The search for Windblade continues as Grimlock joins Bumblebee on a journey to prehistoric Cybertron.

While searching his memories to understand the Allspark, Bumblebee makes a more important discovery… the memory of his friend Optimus Prime

A distress signal from Megatron leads Optimus and crew to the Nemesis, and into Starscream's waiting clutches.

To help Windblade, Bumblebee finds he must travel to Cybertron's forbidden moon.

Cybertron bears witness to a clash of Titans.

Starscream makes a power play for control of the Decepticons as the Moon hurtles toward the Earth.

With Optimus missing and the Quintesson Judge having captured the other Cybertronians, Windblade and Maccadam prepare their last resort.

The Autobots celebrate their newfound victory, but the party quickly takes a violent turn.

In their search for Windblade, Bumblebee and Chromia discover secrets hidden within the legendary Crystal City.

The Autobots repair a damaged space bridge in hope of reaching Cybertron faster, only to wind up trapped in unspace.

Windblade arrives on Earth before the Decepticons and meets her old friend Bumblebee who has no idea who she is.

The Autobots and Decepticons combine their forces to defend Cybertron from its impending judgement.

Hot Rod takes Bumblebee and Cheetor space-boarding through an asteroid field where they encounter Sharkticons.

In an attempt to locate a missing Windblade, Bumblebee goes on a spying mission in Decepticon territory.

A forgotten Autobot returns to Cybertron, searching for revenge.

With the threat of Starscream looming, the Autobots and Decepticons attempt to negotiate an alliance.

Starscream's plan reaches its endgame, and no one is safe.

Optimus Prime leads a strike team of Autobots on a mission deep into Decepticon territory to destroy a dangerous artifact.