In Rivet Town of a world populated by sentient robots, Rodney Copperbottom, son of Herb and Lydia Copperbottom, is an aspiring young inventor. He idolizes Bigweld, a famous inventor, entrepreneur, and philanthropist whose company, Bigweld Industries, hires other inventors and provides robots with spare parts. Following Bigweld's example to "see a need, fill a need", Rodney develops a small, flying robot, named Wonderbot, to assist his father, Herb, who works as a dishwasher at a restaurant. When Herb's supervisor confronts them, Wonderbot malfunctions and wreaks havoc in the kitchen.
