In 2131 A.D., Earth has been hit with a war like no other. Out of the ashes rises the city of Olympus, a utopia where half the population consists of Bioroids (artificial humans) who are controlled by the super-computer Gaia. A warrior by the name of Deunan Knute, is brought to Olympus after years of fighting and is re-united with her ex-lover, Briareos. However, after sustaining life-threatening injuries, Briareos is now a cyborg. And to make matters worse, Olympus, the Bioroids and Gaia are not what they appear to be.