Number 5, one of a group of experimental military robots, undergoes a sudden transformation after being struck by lightning. He develops self-awareness, consciousness, and a fear of the reprogramming that awaits him back at the factory. With the help of a young woman, Number 5 tries to evade capture and convince his creator that he has truly become alive.
After a lightning bolt zaps a robot named Number 5, the lovable machine starts to think he's human and escapes the lab. Hot on his trail is his designer, Newton, who hopes to get to Number 5 before the military does. In the meantime, a spunky animal lover mistakes the robot for an alien and takes him in, teaching her new guest about life on Earth.
Robot Johnny 5 moves to the city to help his friend Ben Jahrvi with his toy manufacturing enterprise, only to be manipulated by criminals who want to use him for their own nefarious purposes.
