Nekogami Hazuki
Kisaragi Asami
Legendary Ancient Monster Don Dragon
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An evil ninja Rider, Kamen Rider Fuma, appears from the virtual reality world in an effort to conquer Earth! It is up to the CR Riders to use the power of virtual reality gaming to save a young girl’s life and stop the evil plans of Machina Vision CEO Johnny Maxima before the Bugster Virus infects all of humanity!

First Lieutenant Shun'ichi Maki of the Japan Air Self-Defense Force is a prestigious F-15 Eagle jet pilot (or "driver" as he is called in the film). A lifelong fan of flying since he was a child, being a pilot is his ultimate dream. Unfortunately, his duties distance himself from his wife, Yoko, who always ends up being neglected, and his son, Tsugumu, who has a congenital blood disease and has a high risk of dying at a young age.Maki decides to quit the Air Force to devote more time to his family and to spend whatever is left for his son. He takes a part-time job as a commercial tour guide run by a kindly group of people who allow him time to work and to also take care of his family.

All the incidents occuring around the Girls Remix up to this point were part of Sumire Kurono's plan to create the ultimate Kamen Rider. Now that plan is moving into its final phase. Sumire kidnapes Nayuta Mikazuki again. After performing her final surgery, "Kamen Rider Eins" is finally born. Will the Girls Remix be able to get Nayuta back? And what will become of Nayuta, who has become Kamen Rider Eins?

The Underground Empire Badan makes its move, intending to invert the world. Kouta and Mai are pulled through one of these inversions where the discover a boy named Shu, who also holds the power to invert the world. As the Riders fight to protect Shu, Fifteen appears again, seeking Shu. As Kouta flees, past Riders gather and fight one another, split between the Showa and Heisei era Riders. But, the truth of Badan is not as it seems…

After the Armor Heroes united to seal up the Dark Forces Monsters, the city regained its peace and happiness. Since Monster Ten was not successfully sealed up, Mei Zhen found Zi Yang, hoping that when danger and difficulty arises, Zi Yang would be able to seal up this last monster and would completely eradicate the forces of darkness on earth. Meanwhile the Five sealed in the Monster Sealing Box, in order to fulfill their quest for world domination, used the forces of darkness to entice an angry youth, and created new mutants to create havoc in the city.