Romeo and Felice lead two rival bands who constantly make fun of each other. One day, Romeo meets and falls in love with Giulietta, without knowing that she is Felice's sister.
Unfortunately the movie I Fichissimi is not yet available on HBO Max.
| Directing | Carlo Vanzina | Director |
| Costume & Make-Up | Marina Straziota | Costume Design |
| Costume & Make-Up | Vitaliana Patacca | Hairstylist |
| Editing | Lidia Pascolini | Assistant Editor |
| Sound | Danilo Moroni | Sound Mixer |
| Camera | Alessandro D'Eva | Director of Photography |
| Production | Claudio Bonivento | Executive Producer |
| Production | Marcello Nusca | Accountant |
| Production | Rossella Angeletti | Unit Manager |
| Sound | Detto Mariano | Original Music Composer |
| Camera | Umberto Torriero | Key Grip |
| Directing | Bruno Cortini | First Assistant Director |
| Art | Antonio Tarolla | Assistant Production Design |
| Sound | Vittorio Massi | Sound |
| Production | Mario Cecchin | Production Secretary |
| Directing | Luda Arlorio | Script Supervisor |
| Writing | Enrico Vanzina | Story |
| Production | Mario D'Alessio | Production Manager |
| Costume & Make-Up | Lucia Baldacci | Seamstress |
| Writing | Carlo Vanzina | Story |
| Art | Giuseppe Mangano | Production Design |
| Production | Roberto Mezzaroma | Administration |
| Editing | Raimondo Crociani | Editor |
| Camera | Angelo Lannutti | Camera Operator |
| Camera | Pino Venditti | Assistant Camera |
| Art | Emita Frigato | Assistant Production Design |
| Lighting | Francesco Pandolfi | Gaffer |
| Costume & Make-Up | Giulio Natalucci | Makeup Artist |
| Writing | Enrico Vanzina | Screenplay |
| Writing | Carlo Vanzina | Screenplay |