Humanity is under attack by demonic creatures called Oni. Unable to fight back by any other means, the scientist Dr. Saotome creates a series of giant robots that harness the mysterious power of Getter Rays, giving them the strength necessary to fight the Oni. The strongest of these is Getter Robo, and Saotome must enlist three very different men to pilot it - martial artist Ryoma Nagare, criminal leader Hayato Jin, and monk Benkei Musashibou. Together, the Getter Team fights to end the Oni menace forever. (Source: ANN)

Recaps of ONA (Episode 0) and 2013 TV Anime Series (Episode 10.5).

It is said that 70% of the human brain capacity is unused. If humans possess incredible power, it is strongly believed to be lying dormant within this region. This unused 70% brain capacity is known as "Night Head". The famous work 'NIGHT HEAD' is going to break the silence. They were abandoned by their parents because of the psychic power they possessed. They are the Kirihara brothers, who lived in a laboratory within a barrier-protected forest. They have escaped from the laboratory, and a new wave of 'Revolution' is about to arise. A new "Night Head" is about to be awakened.

Candy returns to Pony's Home and she meets a girl who has lost her parents and doesn't associate with the other kids. In order to cheer her up she decides to tell her about herself from the moment she was found by Miss Pony and sister Lane to her decision to leave the boarding school in England and walk her own path. (Source: ANN)