Casshern a cybernetic assassin with no memory of his past awakens in a corrosive wasteland where nothing survives for long. A plague known as the Ruin sweeps across this once-vibrant world, reducing everything in its path to rubble and scattering any chance for salvation. Robots and humans alike or what little remains of them seek vengeance against Casshern for the life he took and the role he played in their Ruin. A machine built to kill, Casshern murdered the last hope for this world, but now, lost in a future he does not recognize, he will fight to save the dying.