On his way to Africa, Don Pietro, a young missionary priest has his suitcase stolen in the station of Naples. While trying to retrieve his baggage he realizes how miserable the city of Naples is. Then he decides that his mission is there in Naples, He creates his 'The Boys' Town' a shelter for poor kids, aka the 'scugnizzi' (street urchins), with a view to putting them back on the right track. Some of the kids, though, do not play by the rules just using that 'home' as a convenient place for hiding the product of their thefts...
Unfortunately the movie Guaglio is not yet available on HBO Max.
| Writing | Suso Cecchi d'Amico | Story |
| Writing | Luigi Comencini | Story |
| Writing | Gigi Martello | Idea |
| Writing | Aldo Buzzi | Screenplay |
| Writing | Suso Cecchi d'Amico | Screenplay |
| Writing | Luigi Comencini | Screenplay |
| Writing | Armando Curcio | Screenplay |
| Production | Bianca Lattuada | Production Manager |
| Sound | Nino Rota | Original Music Composer |
| Sound | Fernando Previtali | Conductor |
| Directing | Aldo Buzzi | Co-Director |
| Directing | Giulio Macchi | Second Assistant Director |
| Art | Piero Gherardi | Production Design |
| Costume & Make-Up | Piero Gherardi | Costume Design |
| Camera | Raffaele Masciocchi | Camera Operator |
| Camera | Beniamino Fossati | Assistant Camera |
| Costume & Make-Up | Giuliano Laurenti | Makeup Artist |
| Editing | Adriana Novelli | Editor |
| Production | Alfredo De Laurentiis | Unit Manager |
| Directing | Luigi Comencini | Director |
| Production | Carlo Ponti | Producer |
| Camera | Aldo Tonti | Director of Photography |
| Production | Gigi Martello | Producer |