In an alternate universe where World War II drags on seemingly forever, the future crawls on steel legs.

By 2039, global war has mutated into a monstrous arms race. In the far eastern country of Shang Guo, where spider-like tanks roam and biomechanical machines bend the laws of physics, veteran pilot Guan sets out for revenge. But when a mysterious signal promises to end the war or restart the world, he must choose between survival, duty, and something far stranger. There are no more sides. Only survivors and the war machines they ride.