An alien probe drifts into the space of an alien empire that covers hundreds of worlds. Empress Ru maintains order and peace with her armies and the fear of the Black Ship. A ship that has the power to destroy worlds. It is made more dangerous by its commander. Kolo the Conquer. A brilliant alien who has conquered twenty worlds for the empire.

The probe has a virus inside that results in a billion deaths. Kolo is send to find the source of the plague. His only clue is the word. NASA.