Ninetto De Terenzi is a Roman who lives for the day, helping a lawyer in his intrigues and acting as a stunt double for a cheating engineer; he disapproves of the relationship his widowed mother has with a married man and is engaged to a good worker, whom she tries to betray.

In search of a good story, globe-trotting photojournalist Emanuelle meets up with an ex-prizefighter who tips her off about a rich pervert who recruits girls for his own private harem based on their astrological signs.