Mario, a young philanderer, receives 13 antique chairs in a bad state by inheritance and decides to sell off them to get some money. Afterwards he gets to know that one of them contains documents worth a lot of money. So he begins an adventurous trip to regain possession of the chair. On the way he meets many strange people who would like to help or to swindle him.
Unfortunately the movie Twelve Plus One is not yet available on HBO Max.
| Sound | Stelvio Cipriani | Original Music Composer |
| Camera | Giuseppe Ruzzolini | Director of Photography |
| Editing | Giancarlo Cappelli | Editor |
| Directing | Nicolas Gessner | Director |
| Sound | Carlo Rustichelli | Original Music Composer |
| Editing | Maurice Rootes | Editor |
| Art | Piero Poletto | Production Design |
| Costume & Make-Up | Franco Carretti | Costume Design |
| Writing | Ilya Ilf | Novel |
| Writing | Yevgeni Petrov | Novel |
| Writing | Antonio Altoviti | Screenplay |
| Writing | Marc Behm | Screenplay |
| Writing | Lucia Drudi Demby | Screenplay |
| Writing | Nicolas Gessner | Screenplay |
| Writing | Denis Norden | Screenplay |
