The Film Tells The Simple Story Of A 10-Year-Old Boy And His Robot Dog - Battling Evil, Rescuing His Parents, Saving The Earth - And Returning Home In Time For Dinner. Jimmy'S Always Inventing Gadgets To Make His Life In Retroville More Interesting. A Boy Genius With Real Kid Emotions, Jimmy Sometimes Fantasizes About Life On His Own. But When The Parents Of Jimmy'S Hometown Are Kidnapped By Invading Aliens, He Quickly Discovers That Things Aren'T So Great When They'Re Gone.