The fate of Cybertron is sealed-but what is the DECEPTICON scientist SHOCKWAVE planning? In the wastelands of CYBERTRON, he makes his move prompting SOUNDWAVE and the rest of the DECEPTICONS to step up and stop him but in the end they are faced with the ultimate choice, will the DECEPTICONS stand with SHOCKWAVE-or will they join the AUTOBOTS?

In the early days of the war on Cybertron, Optimus Prime puts everything on the line to unite the planet, but not all agree that the new prime minister should answer! Meanwhile, the fallen leader of the Decepticons Megatron, begins a journey that will change everything.