World War 3 halved the number of Earth inhabitants, leaving survivors only because nuclear weapons were not used. In the chaotic post-war year 2135, the city of Olympus is an oasis of peace since it is governed by Gaia, an artificial intelligence who also coordinates the Bioroids, a sort of artificial humanoids whose modified genes prevent strong emotions. The Bioroids, whose number equals that of humans in the city, administer Olympus and maintain the order. Deunan Knute, a young warrior woman and the cyborg soldier Briareos make a pair both in life and in their work in the E. S.W. A.T., the elite special force of the city who comes into play when things get tough. Together, they will face nasty cyborgs and a cyborg virus. Deunan will also have to cope with Tereus, a new member of the squad. Tereus, a fighter bioroid of new concept is based on Briareos DNA and thus, disturbingly, he has the appearance of Briareos before he was turned into a cyborg.