The Italian Vittorio Coppa works as a sleeper car commuter and commutes regularly between Munich and Rome. Because he believes that true love exists only in connection with marriage, he is secretly married twice.
| Actor | Role |
|---|---|
 Lando BuzzancaVittorio Coppa | Vittorio Coppa |
 Teri TordaiIngrid | Ingrid |
 Heinz ErhardtWeichbrodt | Weichbrodt |
 Peter Weckvon Weiland | von Weiland |
 Raffaella CarràTeresa | Teresa |
 Andrea RauMarisa Carlotti | Marisa Carlotti |
 Ann SmyrnerPüppi | Püppi |
 Jacques HerlinDr. Pellegrini | Dr. Pellegrini |
 Edith HanckeHausmädchen | Hausmädchen |
 Fritz MuliarJohann | Johann |
 Rainer BasedowAlex | Alex |
 Judith DornysTeresas Schwester Luisa | Teresas Schwester Luisa |
 Franco GiacobiniRoberto | Roberto |
| BBarbara ZimmermannRobertos Geliebte | Robertos Geliebte |
| GGert WiedenhofenCesare | Cesare |
 Willy MillowitschVerkehrsminister Mauro Carlotti | Verkehrsminister Mauro Carlotti |
 Clara Auteri PepeTeresas Freundin | Teresas Freundin |
 Grazia Di MarzàSerafina Anzalone | Serafina Anzalone |
 Aldo RendineTeresas Vater | Teresas Vater |
 Raoul RetzerRaimondo | Raimondo |
 Calogero AzzarettoSerafinas Bruder | Serafinas Bruder |
 Mimo BilliRezeptionist | Rezeptionist |