an insurance investigator and a tax collector are covers for his real function as a corporate assassin for Willeford Home Appliances, the corporation that created all the world's robots. Unit Two explains that she and the little girl, also a robot, have broken the programming that forces them to serve humans, and are part of a revolutionary group led by Barbara, a robot that works inside Willeford's headquarters, that intends to free all robots from their programmed slavery. She claims Carl is the revolution's only hope, being the only robot powerful enough to stand up to Willeford's paramilitary security forces. Carl, however, refuses to believe her, and he knocks her head off in a fit of rage. The little girl robot appears and berates Carl for his behavior until Carl's dog arrives and reveals itself to be a robot as well (when it destroys her). At the Willeford building, it is revealed that both Barbara and Mr. Willeford, the morbidly obese founder of the company, have been tracking Carl's movements through the city. Meanwhile, Carl steals a new set of clothes and makes his way onto the subway, where he is attacked by a group of frightened citizens and is forced to kill them. Carl's dog follows him onto the train as Carl finds a Willeford logo underneath the torn skin on his arm and realizes that Unit Two's story was true. Carl's dog offers to lead him to the Willeford building to get some answers from his creators. Later that night, Barbara hears loud noises from inside the Willeford building and goes to investigate, finding a trail of destruction and dead bodies leading deeper into the building. Realizing Carl has arrived, she rushes off to find him. When she finally reaches him, she sees that Carl has slaughtered most of the security forces but has been all but destroyed in the process. When Barbara finds him, he is in the clutches of Willeford's mechanical aides and is slowly being pulled apart by his owner. Defeated, Carl makes a deal with Mr. Willeford to be put back together, have his memory reset, and be returned to his family. Her plans for revolution in shambles, Barbara commits suicide by hooking herself up to a large generator and overloading her circuits. Some time later, Carl, with a new skin, new car and new memories, returns to his family, completely unaware of his