Zero-One Others: Kamen Rider Vulcan & Valkyrie (2021)

Zero-One Others: Kamen Rider Metsuboujinrai is a prequel to this movie. They are two halves of one big story. Not watching Metsuboujinrai will leave Kamen Rider Vulcan & Valkyrie feel incomplete. The two films serve as the epilogue to the whole Kamen Rider Zero-One story.

With the collapse of ZAIA Enterprise Japan, Gai Amatsu establishes a new company with a secretary-type Humagear Rin. But something went wrong with his body, and Kuroto Dan appeared and separated from his body! The Bugster Virus, which was wandering in the internet and was revived by Ark and infected Gai! Gai transforms into Kamen Rider Thouser to try and get rid of the virus, but Thouser looks black for some reason.

Japan has entered a new era. Hiden Intelligence, the leading company in the field of artificial intelligence (AI) has developed and began to test the reality of Human Gear, AIs in human form. Human Gear is designed so that it is no different from humans and is included in many different workplaces.

Meanwhile, "MetsubouJinrai.NET", a terrorist organization, hacked into Human Gear and turned them into weapons to destroy humanity. The Japanese government quickly discovered them and established AIMS (Artificial Intelligence Military Organization) directly under the direction of the Secretary of the Cabinet. AIMS's goal is to destroy the rebellious Human Gear.

On the other hand, man who took up a funny job named Hiden Aruto was suddenly appointed Hiden Intelligence chairman after his grandfather's death. Although he was not interested in being president, but when he saw firsthand the Human Gear hacked by "MetsubouJinrai.NET" to attack people, Aruto used "Hiden Zero-One Driver" only for the president of Hiden Intelligence. and the henshin into Kamen Rider Zero-One.

From here, Hiden will clash with not only "MetsubouJinrai.NET" but AIMS as well, when the AI ??development competition goes into an explosive phase.

Shigeru Daimonji, the National Secretary of Defense has ordered Yua Yaiba to eliminate Kamen Rider Metsuboujinrai. While she hesitates to act on this directive, the Rider itself sets sights on Valkyrie herself. Meanwhile, the now former Solds attempt to discover freedom for the first time without ZAIA Enterprise, while engaging in an all out war against A.I.M.S.. Isamu Fuwa, who personally witnessed the birth of Kamen Rider Metsuboujinrai, investigates to discover their true goal. What is the fate of Yua, who acts on her own justice as she refuses to fight both Kamen Rider Metsuboujinrai and the Solds, and Isamu who is determined to carry out his final mission as Kamen Rider Vulcan?