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Cybertron begins to rebuild in the aftermath of the Combiner Wars - just in time for something to go wrong again.

With Trypticon on a rampage, the people of Cybertron begin weighing their options.

Metroplex and Trypticon face off.

Overlord attacks the Mistress of Flame looking for Megatron, while the Autobot Emissary appears to provide assistance to Metroplex.

Trypticon defeats Metroplex and captures Emissary, and Hot Rod and Windblade launch a rescue mission to save him.

While searching for the answers behind the mysterious return of the Titans, Megatron is confronted by the Combiners who are determined to kill him.

Victorion, now the Ultimate Combiner, is forced to use her new powers to take on Trypticon. Back at the Primal Basillica, Optimus Prime entrusts the Matrix of Leadership to the one person he knows will never betray the Transformers.

Trypticon, closing in on the The Matrix of Leadership, wages war on Victorion. Awakened by Windblade and Emissary, Fortress Maximus returns to help our heroes before Cybertron is lost forever to Trypticon's destruction.

After rescuing Optimus Prime from certain doom, Fortress Maximus arrives to fight Trypticon. Elsewhere on the battlefield, Windblade forces Megatron to choose a side once and for all.

The mastermind behind the Titans' return reveals himself.