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.

• Shintoho Company
• Walter Manley Enterprises
• Ken Utsui
• Sachihiro Ohsawa
• Junko Ikeuchi
• Minako Yamada
• Shoji Nakayama
• Hiroshi Hayashi
• Minoru Takada
• Utako Mitsuya