In this classic manga adaptation, which kick-started the long-running Kamen Rider TV franchise, Hongo Takeshi, a professional motorcycle racer with an IQ of over 900, is captured by Shocker, a Japanese neo-nazi group, and transformed into a cyborg warrior called Kamen Rider. However, before they can begin brainwashing him, Hongo escapes with the kidnapped professor who Shocker forced to turn him into Kamen Rider. Now it's up to Hongo, the professor, and their friend Tachibana to take Shocker down before they can take over the world.