Kamen Rider is a big franchise so I’ll be recapping each series in chronological production order.
SHOWA RIDER ERA
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-My Drama List
Kamen Rider V3 -1973
One night, Shirou Kazami accidentally witnesses a murder by the evil organization Destron, making him their next target. In their first attempt, they planted a bomb pebble into his coffee, but the attempt was foiled when Shirou’s sister, Yukiko, surprised him, causing him to spill his coffee. In their second attempt, they attacked him while practicing motorcycle racing with Tobei Tachibana. In their third attempt, a Destron soldier, disguised as a doctor, tried to put a poison shot in Shirou, while he was being transported to the hospital (after Destron’s second attempt), but Shirou regains consciousness and kills the soldier. Meanwhile, a young woman named Junko Tama stumbled upon Destron’s base. Suddenly, she was attacked by Destron. While trying to escape, she ran into Shirou, who was heading home on his motorcycle, but Shirou didn’t see the Destron soldiers. Surprised, Junko fainted and Shirou took her home. While Junko was being taken care of by Shirou’s family, Shiro reported her story to the police. When he returned home, he found his family being murdered by the Hasami Jaguar, a jaguar monster with blades for hands. Hasami Jaguar then prepares to kill Junko and Shirou but is stopped by Shirou’s high school teacher, Takeshi Hongo, who transformed into Kamen Rider 1. Shortly after he drove off the Destron forces, Kamen Rider 2 shows up, but too late. A vengeance-fueled Shiro asked the Riders to turn him into a cyborg, but the Riders refused, explaining to Shirou what would happen if he did get turned into a cyborg: he wouldn’t be able to live up to his family. Then the Riders asked Junko for the location of the Destron base she stumbled upon earlier. The next day, the Riders infiltrate the base, only to get caught in a trap. Shirou shows up and saves their lives, but gets injured in the process. The Riders had no choice but to turn Shirou into a cyborg. When the Riders were attacked, and almost killed, by Kame Bazooka, Shirou shows up as Kamen Rider V3. Now, Shirou uses his new power to protect mankind against Destron. –My Drama List
Kamen Rider X -1974
Robotics scientist Keitaro Jin and his son Keisuke become caught up in the campaign of terror by an evil organization known as “G.O.D.”. They are attacked and the professor’s technology stolen, but before Keitaro dies, he is able to perform surgery on his son. With the last of his robotics technology, he transforms his son into “Kamen Rider X”. To avenge his father’s death and ensure the safety of the entire world, Keisuke uses this technology as he battles the monstrous minions of G.O.D. –My Drama List