Ronny Bronston was sworn to protect the United Planets' dream -- the climate of individual freedom on all of the 3,000 human-inhabited planets of the galaxy. As an operative of the secret section of the United Planets' Bureau of Investigation, Ronny was called upon for some most unusual missions. But the current crisis was unprecedented. Mans sovereignty in his galaxy was being faced with the ultimate domination of Baron Wyler and his possession of the matter converter of the Dawnmen. And that mysterious, mindless, technologically advanced race -- the Dawnmen... Where in Zen had they come from?