After Prime's demise, Megatronus obtains the Enigma and Matrix. Factions clash over the Requiem Blaster as Megatron battles Megatronus, Overlord and Rodimus. A new Prime arises to decide Cybertron's fate.

Following the death of Optimus Prime, Megatronus claims the Enigma of Combination and the Matrix of Leadership for his own. Now he seeks the Requiem Blaster, intent on harnessing the power of all three artifacts to create a dangerous doomsday weapon. As infighting breaks out between Transformers in fear of the coming apocalypse, a small team led by Megatron must band together to reach the Requiem Blaster first and fight back before Megatronus can wipe out their species forever, all the while contending with his acolytes Overlord and Rodimus Cron. Secrets from Cybertron's past will be revealed, and a new Prime shall be named as the Transformers make their last stand.—Primeeye01