A few decades from now, Sienna, a rebellious robot-fighting arms dealer, lives on a post apocalyptic Earth. When the cities start to fall under the control of the A.I. Scourge, a hyper-weaponized robot army, Sienna decides to leave the Earth and journey to the center of the galaxy, seeking a mythical weapon that can neutralize any form of A.I. Pursued by giant machines, Sienna loses everything she cares about in an effort to save the last vestiges...