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.
You can now watch Arianna online on the following streaming providers in the United States.
| Directing | Carlo Lavagna | Director |
| Writing | Carlo Lavagna | Screenplay |
| Editing | Lizabeth Gelber | Editor |
| Art | Fabrizio D'Arpino | Art Direction |
| Costume & Make-Up | Zazie Gnecchi Ruscone | Costume Design |
| Camera | Hélène Louvart | Director of Photography |
| Sound | Emanuele De Raymondi | Original Music Composer |
| Writing | Chiara Barzini | Screenplay |
| Writing | Carlo Salsa | Screenplay |