The superhero Starman is sent by the Emerald Planet to protect Earth from belligerent aliens from the Sapphire Galaxy. The Sapphireans (or "Spherions") kidnap Dr. Yamanaka and force him to use his spaceship against the Earth.

casts

Ken Utsui

Junko Ikeuchi

Shoji Nakayama

Hiroshi Hayashi

Minoru Takada