Worker robots keep the high-tech town of Terabyte Heights humming, but ten-year-old George Gearing is the only one who has a robot for a best friend. When his scrappy but beloved pal Jackbot is hit by a car, the whiz kid re-engineers him with fancy parts from state-of-the-art TinkerTech Laboratories. Jackbot's astounding new skills far exceed anything George - or even TinkerTech's head of robotics - could ever have imagined. Will the villainous Dr. Micron destroy the whole town to see his tech-driven dream realized? Not if George can help it . . .