The great detective Florín and his assistant, Cepillo, are preparing to travel to Egypt, where they will face a mysterious event: the mummy of the famous pharaoh Tar-harí, recently discovered by archaeologists Nabín and Karín, has been stolen along with the monarch’s treasure. The Egyptian authorities want the case to be resolved without publicity, but the presence of the famous detectives will soon raise the suspicions of Mustafa, a young reporter willing to do anything to advance his career. With the only clue being a hieroglyph that they must decipher, Florín and Cepillo, global detectives, get to work.

Will the famous researchers be able to clarify the enigma, discover the thieves and recover the mummy and the treasure?