The brilliant Dr. Azuma created many robots to aid humankind. However, during a thunderstorm his lab was struck by lightning, corrupting the programming of one of his robots, BK-1, who renames himself Braiking Boss and declares that instead of serving mankind, mankind will now serve him! He brings other robots together into an overwhelming army bent on enslaving the human race.

Tetsuya, Dr. Azuma's son, asks his father to turn him into an indestructible android so that he will have the power to destroy the threat his father inadvertently created. Shortly thereafter, Braiking Boss captures Dr. Azuma and his wife, Tetsuya, now renamed Casshern, sets out to turn the tide of the war and rescue his parents, with the help of his girlfriend, Luna, and robot dog, Friender.

In the near future, robot technology has advanced to the point of self-awareness. Under the leadership of the "Black King," machines have decimated the human population and conquered the world. Those who survived the early holocaust have been enslaved for life. But throughout the hardships, a lone hero appears as the savior of mankind. He is Casshan - a fusion of man and machine driven to combat Black King and his forces to the end.

[Source: Anime News Network]

In the distant future, where cyborgs and humans struggle to survive after the war which destroyed the world, a being in white suit awakens. His name is Casshern and he remembers nothing of his own past.

In barren and dark dystopian world, where every being alive seems to hate his existence and the evil from his past wants him dead, Casshern, haunted by the flashes of his past memories has to survive and figure out who or what exactly he is and how he got to where he is now. But he does not know that he might not like the horrible truth of the past, hidden deep inside his mind...

Created as an intended reboot of Casshern franchise.