Richie Adler (Matthew Laborteaux) is a tenth-grader who lives with his mother, Irene (Madelyn Cain) and younger sister, Cheryl (Melanie Gaffin). His parents are divorced, and his father works overseas as a telecommunications engineer to several firms. Richie is an advanced computer user and receives most of his equipment from his father, who acquires obsolete equipment that is scheduled to be scrapped. Richie collects this equipment and assembles it to form "Ralf", his pet name for his computer system. Ralf has multiple components and capabilities, including a camera that produces a facial identification system.