When humans become too reliant on technology, to the point where artificially intelligent robots decide they can run more efficiently without them, there’s a bit of a problem. The humans are expelled from civilization by the technology they created.
In an attempt to get back to the prominence they once held, the humans create a network of robot spies to work within the robot civilization. One of these spies is APA-26 (or just 26 to those that know him). After acquiring an upgrade of human emotions, 26 begins to wonder if he’s actually alive and if so, what’s his purpose in life. He tries to “earn” his humanity by helping the humans, but deep down he knows he’s “just a machine”.