As the man-machine confrontation aboard the Janus space colony continues, Dr. Dyer and his team race to keep the backup control systems connected to the power supply. But the supercomputer Spartacus now knows how to anticipate their moves and think ahead. A complete loss of power to non-Spartacus systems would mean the death of every human on board the station. They must activate the military option, and destroy all Spartacus' drones. The only problem -- Spartacus has anticipated this, as well!