Young orphan Saburo uses a special helmet to command the Iron Robot 17 against the forces of the renegade computer Brain. Theatrical release re-edited from the first two episodes of the TV series, which actually preceded the original broadcast of the second episode.

Captain Gomes uses a flying battleship to battle the giant robot Daitetsujin 17. Theatrically-released abridgement of Episode 15 of the TV series.

Brain is the world's greatest computer, and also the most intelligent being on planet Earth. One day, Brain decides to abandon its terrestrial moorings, and it's up to The Defenders to track it down. Unfortunately, Brain has developed an amazing army of deadly giant robots, including one with a huge "17" emblazoned on its chest-plate, with which it plans to subjugate its creators. A young boy whose family was killed by Brain's followers manages to activate Daitetsujin 17, which thereafter comes to his rescue whenever he is in danger from Brain's minions.

A sinister organization launches a wave of audacious attacks in an attempt to gain world domination. Commanded by the evil Professor Gill, masked androids and fearsome DARK Destructoid monsters terrorize innocent victims and wreak havoc throughout Japan. A solitary figure emerges to combat the menace. Whenever DARK attacks, a denim-clad road warrior appears, strumming a haunting refrain on his guitar. His name is Jiro, and a secret lies at the heart of his lonely existence. Jiro is a mechanical man. Vulnerable to Professor Gill's shrill flute wooing him to the DARK side, Jiro battles the evil menace by transforming into the mighty red-and-blue android known as...Kikaida.

Kyoko met Tetsu during her trip to San Francisco. Soon they fell in love but getting married was not in his mind. They were to meet again back in Tokyo but Tetsu didn't turn up. She went to look for him in San Francisco but all she found was him with his new girlfriend. Kyoko went back to Tokyo and eventually married a big corporate CEO.