一位古堡女侯爵十多年前走失了自己的外孙女，一个奸商为了谋得古堡里暗藏的财宝，命令小朱迪伪装成女侯爵的外孙女潜伏进古堡探寻宝藏的冒险喜剧故事

British Army radiation drills at a remote Scottish base attract a subterranean, radioactive entity of unknown nature that vanishes, leaving two severe