In 1970, debris from the 1908 Tunguska “meteor” are found which turn out to be recordings from a spaceship crashed there. The ship’s origin is determined to be Venus, and an international team sets out with their spaceship “Kosmokrator” to visit the “Silent Planet”, which is shrouded in clouds, and doesn’t respond to contact attempts.
One thing is certain, man stands at the crossroads of history, the atomic age! It was Dr. Morley of the now defunct Society to Save civilization who said that atomic energy could reduce civilization to ashes. Now with bombs a thousand times more powerful the chances are that all future civilization could be compromised. Empowered by professional “do-gooders” he hatches a plan to save mankind.
Good aliens are sent from the Emerald planet to protect the earth from an evil space race called the Spherions. Starman shows up and finds out that not only has to fight the Sperions, he also has to root out human traitors.