The sixteen-year-old Giulia, daughter of a successful writer and painter, leaving the college, spends her holidays in the family's villa, at the seaside, with a group of friends of her age. One day he arrives at the villa Paolo, a colleague of Giulia's father, who has to complete a screenplay with him. The girl decides with cold determination to entrust precisely to Paul the "task" to "free her" of virginity, thus beginning a skilful maneuver of priming. At the same time, Giulia's mother falls in love with Paolo, and just when he decides to declare his love, he is rejected by the young man, who is now entangled by the sixteen year old. At the end Giulia, having achieved her goal - declaring however, immediately afterwards, repentant - unloads Paolo and returns to her peers.