Invasion of the Neptune Men

The film follows astronomer Shinichi Tachibana, who doubles as the superhero Iron Sharp. He becomes a beloved figure among children, using his ingenuity to develop an electric barrier that protects Earth from an impending alien invasion. As the metallic aliens threaten humanity, Tachibana's efforts to drive them away become crucial to the planet's survival.

With a mix of action and adventure, Invasion of the Neptune Men reflects the science fiction trends of the 1960s, showcasing the era's fascination with alien life and superhero narratives. The film features notable performances from actors like Sonny Chiba and Shinjirō Ehara, making it a curiosity for fans of Japanese cinema and action films from this period. Its blend of themes and unique storyline contributes to its appeal in the realm of physical media collecting.