Parthenope, born in the sea near Naples in 1950, is beautiful, enigmatic, and intelligent. She is shamelessly courted by many. However, beauty comes at a cost.
One dark night during the early phases of WWII, the Italian Royal Navy submarine Cappellini sinks an armed merchant ship sailing with lights out. At that moment, its commander Salvatore Todaro makes a decision that was destined to go down in history: to save the 26 shipwrecked Belgians who otherwise would have drowned in the middle of the Atlantic Ocean and disembark them at the nearest safe harbor. To make room for them on board his submarine, he is forced to navigate on the surface of the water for three days, visible to the enemy forces and endangering his life and that of his men.
Mirea is about to be 18 years old, and her family is prepearing a big party for her. Teresa, Mirea's mother, wants to gain notoriety, so begins to spend recklessy for the celebration. When the day finally comes, an unexpected death puts it at risk.
