The Neapolitan Commissioner Rizzo, said "Flatfoot", leaves to Egypt; a major Italian scientist has disappeared. The man in fact, before the kidnapping, was doing a research on the oil fields in Egypt, and as a gang of criminals had put on his trail to get their hands on his projects. Flatfoot, who arrives in the land of the pharaohs, discovers that the scientist is kidnapped because he has realized that a particular beetle is attracted by land oilfields and nests on them. Now that the criminals have in hand the research of the scientist, Flatfoot sets out in search of them ...