In the far future, peace and violence walk hand in hand. The citizens of Jesus Town, a false utopia ruled by the iron fist of Gurjev and his cyborg enforcer Michael, long for a savior from their veil of peace. While a small band of rebels search for a new weapon to aid in their fight against Gurjev, a dark force begins to stir. Hidden far from civilization lies what could be the answer to everyone's prayers. After a long imprisonment, Hakaider, the Destruction Rider, is discovered by the rebel forces. Kaoru, a member of the rebellion, enlists Hakaider to aid in their fight. Now aware of the new menace, Gurjev seeks to crush the rebels and remove the threat of Hakaider once and for all. Will Hakaider prove to be a long desired savior, or an unstoppable force that will destroy all?
The movie is set in the near future, when the “ARK Project” has initiated a program to increase the quality of human life through the peaceful use of robots. Dr. Komyoji, the chief scientist on the project, has developed a process to create a robot with a figurative human “heart” through the installation of a “conscience circuit”, but his plans are violently opposed by researcher Gilbert Kanzaki. When Dr. Komyoji is killed in an apparent accident, his children Masaru and Mitsuko are targeted by mysterious forces within the ARK Project looking to gain control of the scientist’s research data. But the villains are opposed by Jiro, the android with a human conscience who fights for justice as the hero Kikaider.
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.
When Hakaider starts his own evil organization, Dr. Komyoji's android Kikaider 01 awakens to protect Japan from the forces of evil.