To Regain What Was Lost

The war was over. The massacre that had lasted for millennia had finally run its course, but at a cost to both factions. But even as the Autobots work to rebuild their ravaged planet meticulously planned attacks are being carried out, but the mastermind behind these strikes remains hidden in the shadows. Is Megatron still functioning and trying to seek his revenge, or is there another power seeking to revive the Decepticon faction to finish the Autobots once and for all? Co-written with I_am__Me.