The story is staged in the distant future within our own Milky Way Galaxy, approximately in the 35th century. Unlike many science fiction stories, there are no alien civilizations. A portion of the galaxy is filled with terraformed worlds inhabited by interstellar traveling human beings. For 150 years two mighty space powers have intermittently warred with each other: the Galactic Empire and the Free Planets Alliance.
Within the Galactic Empire, based on 19th century Prussia, an ambitious military genius, Reinhard von Müsel, is rising to power. He is driven by the desire to free his sister Annerose, who was taken by the Kaiser as a concubine. Later, he wants not only to end the corrupt Goldenbaum dynasty but also to defeat the Free Planets Alliance and to unify the whole galaxy under his rule.
This story has the part which was created by referencing Wikipedia, so the licence of GFDL is applied to this story.