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.
Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.
A theatrical release of The Return of Ultraman episodes 13-14. It was released on December 12, 1971 as part of the Toho Champion Festival along with Godzilla, Mothra, King Ghidorah: Earth's Greatest Battle (edited from Ghidorah, the Three-Headed Monster) and shorter versions of The Adventures of Hutch the Honeybee, and The Little Match Girl.
