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.
Ken Utsui
Starman
Sachihiro Ohsawa
Junko Ikeuchi
Minako Yamada
Shoji Nakayama
Hiroshi Hayashi
Minoru Takada
Utako Mitsuya
