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.
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.
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.