When he learns his days are numbered old count Hervé de Kéraudren decides to hide in a secret alcove and to die there, just to annoy his heirs. As a result of his body not being found the latter will have to wait for five years until they can inherit the count's money. Very upsetting indeed, all the more as they are required to keep up the Kéraudren estate in the meantime. To collect money, nephews and nieces organize a Son et Lumière show at the manor while busily looking for the missing corpse. But, unexpectedly, they get killed in turns. Murders or accidents? Jean-Marie, his fiancée Micheline and his cousin Edwige investigate and finally succeed in exposing the culprit. And, the count's body being found by chance, all goes back to normal.。美国国防部的一块电脑芯片不见了,里面存着高级的机密。国际犯罪分子也将其价格炒到了天文数字。为了能完成交易,犯罪分子将其藏匿在一台玩具遥控车里面,并顺利通过了机场的安检。不过,途中却阴差阳错的被一位老太太调包,最终这台藏着高级机密芯片的遥控车被送到了8岁男孩儿亚历克斯的手中。为了取回芯片,受过专业训练的犯罪分子潜入了亚历克斯所住的小区。一天晚上,亚历克斯因为长水痘而被独自留在了家里,这给了犯罪分子极大的机会。不过,亚历克斯却不是他们想象中的8岁男孩儿,他有着让人意想不到的“武器”,最终用智慧打败了犯罪分子。。