A man is found beaten senseless in a parking lot, and the criminal he fingers is...George? Time for the Junior Detective League to spring into action and clear their friend's name!

Then a discovery in the school library reminds Conan of one of his first cases. Flash back to the young Jimmy and Rachel as they track down a sinister intruder in their elementary school after dark...an intruder who seems to have supernatural powers! Can two ordinary kids solve a code left by a master of mysteries?