Corey (Fred Savage) refuses to let his mentally troubled younger brother Jimmy (Luke Edwards) be institutionalized, and both run away together. They soon join forces with a glamorous woman (Jenny Lewis), who finds Jimmy has a unique talent: he could be just a"wizard" in video games and can attain the high score on absolutely everything he plays. Evading their parents and a menacing bounty hunter, the trio head at the federal video game championships from California.