The Steel Realm

After the rise of the machines, humankind has been wiped off the face of the Earth. The few survivors were infected with an extremely aggressive virus, transported by nanomachines, that slowly eats them from inside. But some people, known as the Steel Warlocks, are capable of harnessing the secret power of the nanobots, and are ready to take the fight back to the facilities housing the metallic beasts that brought on the Apocalypse.