Plot
Geneshaft is set in a future where genetic engineering has become the dominating technology, defining human society entirely. The government of Earth is totalitarian and as a result there has been peace for 200 years. The government is in control of human reproduction, and is in charge of all (artificial) births, as well as altering the genetic characteristics of every new individual, according to their function in society. One alteration common to all individuals limits their lifespan to 45 years, in order to limit the extent of aging so that they remain healthy and able throughout all of their adult lives.
People are largely rated by the quality of their DNA, and those whose DNA is relatively unrefined, such as those of the 'white' gene type, are generally considered inferior. In order to prevent irrational behavior caused by strong emotional attachment, family structures have been disbanded, and the emotions of love and lust eliminated. The ratio of men to women is 1:9, as it is considered that males are more aggressive than females, and this was part of what led past societies to destruction. Modern society is completely peaceful, the few men typically having leading-type positions, and commonly being of gene types that grant enhanced decision-making skills, while the females are in charge of lesser positions. Men are assigned Registers - emotionless, drone-like women - whose purpose is to document all actions a man takes, as men's DNA contains elements of destructive desires that cannot be eliminated, while acting as his assistant.
The story begins at the time when a 500 kilometer in diameter ring-shaped structure had appeared near the Earth five years prior. Dispatched from nearby Markanan space station, several female astronauts were about to investigate its nature when it produces a massive energy blast which destroys the space station and a large portion of the surface of the Earth, after which it disappears. This instigates the mobilization of a special group of men and women with specific genetic characteristics, who set out aboard the Bilkis spaceship to investigate the origins of the ring, and the possible connection with mysterious alien technology found in Jupiter's moon Ganymede.
During their voyages they encounter several instances of the Ring technology, which they fight with the giant mecha, called 'Shaft'. The technology of Shaft is mysterious and the mecha requires very special skills to be piloted. Along the way, they also encounter situations and people which make them question their nature as 'superior', and raise doubts about how 'perfect' their society really is.