The past, present and future collide on Cybertron as the final showdown for the Allspark begins with some unexpected participants.

As the Autobots and the Decepticons close in on it, the Allspark launches a defense system that alters perception and disrupts all functionality.

After crash-landing at different locations, the Autobots and the Decepticons encounter the planet's denizens and are shocked to learn who they are.

The Autobots and the Maximals attempt to launch the Ark to return to Cybertron. They meet heavy resistance — until something extraordinary occurs.

Megatron acquires an advantage in locating the Allspark. The Maximals mount a rescue attempt when the Predacons capture one of their teammates.

Megatron's continued use of the Golden Disk to guide his actions threatens to derail Optimus Prime's attempt to obtain the Allspark.