When Pete and Freddie (Abbott and Costello), a couple of Americans stranded in Cairo, overhear an archaeologist chatter about discovering a legendary mummy, they decide to apply as chaperones for the corpse back to the United States. But when they arrive at the archaeologists home, strange happenings are afoot. First of all, the archaeologist has been murdered. Then, the mummy seems to have disappeared. And on top of that, the boys become owners of a sacred medallion that holds the key to the location of an ancient buried treasure - one that many would kill for!