Eugene, a young nobleman, asks two penniless idlers to impersonate his noble relatives to help him marry Gemma, the daughter of an enriched cook.
During a police raid at Villa Borghese, the agent, a widower named Antonio Caccavallo, stays to get better acquainted with the young Carolina.
Sophia Loren plays a dual role, as both the sultry Queen of the Nile with a "man-a-night" appetite and a beautiful slave girl who takes her place and is wooed by a bodyguard who thinks she's the real monarch.
