The Dogma Kingdom attacks the Matagi (mountain tribe) village of Yamabiko to steal the sacred Flying Dragon Fortress and wreak havoc all over Japan. Six children from the fallen village take refuge in a nearby town, keeping their identities as Matagi citizens a secret. Kamen Rider Super-1 must protect these children from the Dogma Kingdom, as they hold the secret to the Flying Dragon Fortress' weakness.

村雨良跟姐姐在一次旅行时不幸被暗黑大使率领的组织·巴丹的所捉，姐姐被杀害，他则被改造成机器假面骑士·ZX。但由于改造时发生意外，良的意识被唤醒，并趁机逃脱。知道自己身体被改造后的良十分愤怒，并决心向巴丹报服。 在一次追查巴丹的过程中良认识了其他的假面骑士，开始知道了像他那样的改造人不止一个，同时也在假面骑士们的口中得知巴丹的巨大阴谋：利用時空破断系统企图将世界毁灭！为了阻止巴丹的阴谋，十个假面骑士一起展开了作战！

Professor Daidōji has developed a gravity machine called the GX Device. Unfortunately, Shocker wants it; so they attack the professor and destroy his laboratory, but come home empty-handed. Shocker's agents find out that the plans for the GX Device are with Daidōji's daughter, who is celebrating her birthday. Now the Kamen Riders, along with FBI agent Kazuya Taki, must protect Daidōji's daughter and prevent Shocker from obtaining the plans.

某天，东日本公路摩托大赛隆重召开，本乡猛（藤冈弘 饰）和泷和也（千叶治郎 饰）一马当先，将所有对手甩在身后。谁知途中他们遭到修卡的暗算误入歧途，更遭到对手的爆弹袭击。身怀绝技的本乡和泷干掉了小喽啰，随后伪装成修卡混入地狱大使（潮健儿 饰）的老巢。可是他们的行踪却在地狱大使的掌握之中，本乡化身假面骑士与敌人作战，却得知地狱大使暗中构建了秘密要塞和超级破坏镭射装置，该装置可以轻松摧毁日本列岛的任何地方。可怕的怪人劫持了百合与绘美，为了救回好友，拯救全日本，假面骑士争分夺秒展开行动…… 本片根据石之森章太郎的漫画原作改编。

A physicist named Tetsuo Okita discovers a new mineral called "Satanium," which is more powerful than uranium and emits destructive effects to anyone exposed to it. However, Destron abducts Okita in hopes of finding the source of Satanium and collecting more of it to expedite their run for global domination. Kamen Rider V3 must act fast in rescuing Professor Okita and preventing Destron from collecting more of the deadly mineral.

TV第54话再编集版。