Plot: In an alternate universe, all Kamen Riders were fighting their respective enemies, but then an incident caused Nathaniel Lane-Kent a.k.a. Kamen Rider Saber to mistakenly kill one of his wives Zatanna Zatara and his unborn child, besides destroying Metropolis with a nuclear bomb. When his adoptive father Clark Kent a.k.a. Superman found out that Ryu Nogami a.k.a. Another Shinobi was the responsible for the incident that cost his wife Lois Lane, and that he had the help of The Joker, both Nathan and Clark kill them in retribution. Two years later, Kamen Rider Saber and Superman became oppressive rulers of the Earth while Batman and Naoki Hyuga a.k.a. Kamen Rider Tycoon are rebels trying to topple their empire.

Insurgency Kamen Riders:

Naoki Hyuga/Kamen Rider Tycoon (main leader)

Kunio Hino/Kamen Rider OOO

Ingvild Leviathan/Kamen Rider Femme

Lucian Date/Kamen Rider Birth (Prototype)

Tokuro Asahina/Kamen Rider Zeronos (tok-kun5147's OC)

Naoto Hachiouji/Kamen Rider Calibur (Acts as a mole within the Regime)

Regime Kamen Riders:

Nathaniel Lane-Kent/Kamen Rider Saber

Tadano Hitohito/Kamen Rider Blades

Makoto Fuwa/Kamen Rider Specter (AlstonChanAlstonChan's OC)

Terry Riendhardt/Kamen Rider Demons

Aqua Hoshino-Hyoudou/Kamen Rider PunkJack

Kinoko Komori/Kamen Rider Larc

Ruan Mei/Kamen Rider Majade

Zuko Kuroi/Kamen Rider Sangou (KaijuMaster20's OC)

Society Kamen Riders:

Zach Snow/Kamen Rider Baron (main leader)

Riser Phenex/Kamen Rider Ouja

Kataguri Serizawa/Kamen Rider Sasword (KaijuMaster20's OC)

Tokuhiko Demiurgos/Kamen Rider Dark Kiva (Tok-kun5147's OC)

Main Antagonist: Kamen Rider Yongou