Megatron urges Optimus Prime to accept a treaty, while Starscream questions Jetfire’s leadership. The Autobots try to recruit Bumblebee to their side.
Megatron receives a surprise visitor; Shockwave reveals how finding the mythical Allspark can help defeat the Autobots. The Decepticons lay a trap.
Optimus has a plan but needs Ratchet’s help. Ultra Magnus is tortured for information while Starscream continues to foster dissent among the Seekers.
Elita casts doubt on Optimus’ plan, which includes fixing a Spacebridge. Optimus appeals to the Guardians for help and Bumblebee receives a high honor.
Jetfire offers to help Optimus retrieve the Allspark. Bumblebee, Cog and Arcee go on a mission for energon; Wheeljack tries to get the Ark to fly.
Optimus struggles to obtain the Allspark. Megatron figures out Optimus’ plan and orders an attack on the Autobots, who receive an unexpected assist.
Believing the Allspark destroyed, Megatron plans to flee the dying planet — but at great cost. Elita’s plan to free some prisoners hits a snag.
Mercenary Transformers come upon the Ark adrift in space. As unlikely allies arrive to rescue the imprisoned Autobots, Megatron reveals Project Nemesis.
The Autobots locate the Allspark, but a deserted space station and its lone occupant stand in the way. The Decepticons catch up with the Ark.
Megatron faces a life-or-death situation. As the Autobots and Decepticons work together to fight against Scorponok, Starscream tries to seize power.
Optimus encounters an unexpected guide who shows him a possible future. Megatron meets an entity who tells him what he needs to take from Optimus.
Above the planet where the Allspark lies, the Autobots and Decepticons battle while Deseeus closes in to exact revenge upon them all.
After crash-landing at different locations, the Autobots and the Decepticons encounter the planet's denizens and are shocked to learn who they are.
Megatron acquires an advantage in locating the Allspark. The Maximals mount a rescue attempt when the Predacons capture one of their teammates.
As the Autobots and the Decepticons close in on it, the Allspark launches a defense system that alters perception and disrupts all functionality.
Megatron's continued use of the Golden Disk to guide his actions threatens to derail Optimus Prime's attempt to obtain the Allspark.
The Autobots and the Maximals attempt to launch the Ark to return to Cybertron. They meet heavy resistance — until something extraordinary occurs.
The past, present and future collide on Cybertron as the final showdown for the Allspark begins with some unexpected participants.
