Invasion of the Neptune Men

Metallic aliens have begun attacking the children of Earth, and the only one who drives them off is Iron Sharp, a masked hero the kids adore. Behind the mask is the astronomer Tachibana (Sonny Chiba), who helps build an electric barrier to keep the invaders out. Koji Ota, working at Toei in 1961, stages it with the speed and plain enthusiasm of a Saturday matinee serial.