Corey (Fred Savage) refuses to let his mentally disturbed younger brother Jimmy (Luke Edwards) be institutionalized, and the two run away together. They soon get together with a glamorous woman (Jenny Lewis), who sees Jimmy has a special gift he could be a"wizard" at videogames plus can achieve the highscore on absolutely everything he plays. Evading their parents and a menacing bounty hunter, the trio go at the national video game championships in California to get a climactic showdown.