The discovery of a dagger from the XIX century, with the localization of a great treasure, involves Pedro, a university history professor in the greatest adventure of all time.

Albert Spaggiari is arrested in Nice and brought to a judge's office for interrogation, but he escapes to South America where he meets a journalist who is investigating the event.

When the Portuguese police began to investigate, in 1967, an illegal prostitution network, they ended up stumbling upon a huge secret that could shake the foundations of the republican regime: a select group of prostitutes who organized parties with teenage girls to secretly satisfy the sexual desires of bankers, politicians, ministers, aristocrats and powerful businessmen: the Ballet Rose Case.