In 2046, a cop and his female partner - a member of the latest "class III" model of near-human androids - investigate the illegal manufacture of class IIIs on colonized Mars.

Eiji Takanaka is a B Level hacker who has been accepted into EX. However, before his first day on the job, he becomes embroiled in a network war, a legendary figure named EVE, and a plot to re-inhabit the Earth.