A mysterious phantom assassin stalks Optimus Prime. Can Kicker and the Autobots protect Optimus and unmask the assassin before it is too late?

Fueled by the light of Primus, the remaining Cybertron warriors are reborn and Optimus Supreme goes toe-to-toe with Unicron.

Optimus Prime and the other Autobots try to break through the Energon grid.

The Autobots are in disarray trying to avoid detection from Galvatron, while Ironhide faces a showdown with Scorponok.