Arianna is nineteen, but she's still waiting to get her first period. As the summer begins, her parents decide to renew their acquaintance with their country house on Lake Bolsena, where Arianna lived until she was three, and has never been back. As the family settle in for the summer, long-repressed memories start to re-emerge, and Arianna decides to stay on after her parents return to the city.

Lucia and Maria are two best friends, who have known each other from the beginning of their life, but have very different tastes and behaviors. Lucia is done with men, Maria, on the contrary, cannot be without one. One night, the perfect man shows up in Maria's bed: handsome, sensible, mature and passionate.The next morning brings up misunderstandings and lies which make the two friends split up and take a break for themselves. Maybe that young man met by chance is really the one every woman is looking for, because with his simple theories he manages to paint the perfect picture of the two women's lives. Written by Marco Bonelli