A planet-wide epidemic caused by an extraterrestrial virus totally changed all women of the planet of Velian. Their bodies transformed to become parts of collective intelligence, presumably controlled by some non-humanoid creatures. The Velian men proved to be resistant to the virus, but they lost their status of free intelligent beings and only existed as suppliers of biomaterial for further gene experimentation and as parts of complex biomechanical systems. The society became now a kind of matriarchal hive.