Following a broadcast on the radio, each of the listeners remembers these "little nothings" (the title is borrowed from a play by Mozart), which have often changed their lives. Each of these stories told will prove that a tiny detail in life can change an entire destiny.
| Actor | Role |
|---|---|
 RaimuCharpillon | Charpillon |
 FernandelAstier | Astier |
 Cécile SorelLa Clermont | La Clermont |
 Suzy PrimLouise | Louise |
 Thérèse DornyL'habilleuse | L'habilleuse |
 TramelNot listed | Not listed |
| MMichele OlivierNot listed | Not listed |
 Jacques ErwinAlceste | Alceste |
| SSuzanne CoulombNot listed | Not listed |
 Robert MoorNot listed | Not listed |
| SSonia GobarNot listed | Not listed |
| JJean HeuzéNot listed | Not listed |
 Lucien HubertL'employé des Pompes Funèbres | L'employé des Pompes Funèbres |
 Jean MarconiNot listed | Not listed |
| CCharles LavialleNot listed | Not listed |
| JJean CastanNot listed | Not listed |
| HHervalsNot listed | Not listed |
| MMarc AnthonyNot listed | Not listed |
| LLydie ValloisMadame Drial | Madame Drial |
 Jean d'YdNot listed | Not listed |
| JJacqueline ParisNot listed | Not listed |
| LLucien BrûléLe roi | Le roi |
| FFrançoise ThurinNot listed | Not listed |
| GGérard OuryPhilinte | Philinte |
| GGeorgette KaylorNot listed | Not listed |
| WWeberNot listed | Not listed |
 Louis ArbessierNot listed | Not listed |
 Pierre AssoNot listed | Not listed |
| VVillordNot listed | Not listed |
| JJacques PhilippotNot listed | Not listed |