The peaceful and backwater world of Blauwelt finds that there is no safety in being peaceful and backwater. The Sartoff, a group of militarily aggressive peoples who escaped from Mankind's mother world, Earth, centuries before is now encamped on one of Blauwelt's continents and setting up a base for the conquering of the whole planet.
Blauwelt, a planet with the smallest of Defense Forces which in reality is almost just a planetary police force, has no way to stop the invasion or the conquering of their world. For that reason, it falls to the von Hauptman family, Drs. Shelley and Philip von Hauptman and their kids, Trinka and Jase, to find the way to destroy the enemy and convince them that Blauwelt is not for conquest.
This is their story.