Waniida from Black Satan attacks a young boy and long-time Kamen Rider ally Tōbei Tachibana, but Kamen Rider Stronger and Electro Wave Human Tackle run in to make the save. However, Shigeru and Yuriko fall into separate traps and are captured by Black Satan. Yuriko fights for her life as Shigeru is brainwashed by the organization.
| Actor | Role |
|---|---|
 Shigeru ArakiShigeru Jo / Kamen Rider Stronger | Shigeru Jo / Kamen Rider Stronger |
 Kyōko OkadaYuriko Misaki / Electro Wave Human Tackle | Yuriko Misaki / Electro Wave Human Tackle |
 Akiji KobayashiTôbei Tachibana | Tôbei Tachibana |
 Akira HamadaMysterious Gentleman / Mr. Titan | Mysterious Gentleman / Mr. Titan |
 Hitoshi ŌmaeTakahira Oki | Takahira Oki |
 Ritsuo SawaKikkaijin Waniida (voice) | Kikkaijin Waniida (voice) |
 Gorō NayaThe Great Boss (voice) | The Great Boss (voice) |
 Shinji NakaeNarrator (voice) | Narrator (voice) |