After Professor Kasuga is killed by fiendish aliens for plans to a super-rocketship, his children trek across Japan, protected by the second-oldest brother, Koji, who transforms into the super-cyborg, Silver Mask.
Toshio Shiba
Koji Kasuga / Silver Kamen
Junko Natsu
Hitomi Kasuga
Saburo Shinoda
Kozo Kasuga
Seiichirō Kameishi
Koichi Kasuga
Shūichirō Moriyama
Narrator (voice)
