For ages BLACKOUT and BARRICADE have raged across the galaxy alongside MEGATRON®, bringing sorrow and destruction wherever they stepped. Hundreds of worlds bear the deep scars left by their heavy feet, cities and mountains cut to pieces by the heat of their lasers. They have quested in search of the AllSpark, that legendary artifact that will, at long last, make them invincible. Though deprived of their leader MEGATRON®, their quest continues, and at its end lie the broken, rusting bodies of their eternal enemies – the AUTOBOTS®.