When the Autobots return to Cybertron, they discover Galvatron's plan already in motion and the fate of the planet rests on the outcome of a battle between Optimus Prime and Galvatron.
Wheeljack awakens to find a strange, new Cybertron! The secret origins of Cybertron's golden age are revealed to Optimus Prime - and what he learns changes everything about the Autobots' mission on Ea
