Peppino, a slow-witted local villager of the Italian resort town of Amalfi, is bribed to impersonate famed rock and roll star Adriano Celentano for autographs and personal appearances. While Celentano tries to romance Emanuela Mazzolani, the daughter of a well-to-do resident who dissaproves of the union between his daughter and the man he thinks of as a "punk", Peppino, unaware of the true nature of his job to impersonate Celentano, tries to deal with his girlfriend's newborn baby which gets switched around between him and Celentano.
| Actor | Role |
|---|---|
 Adriano CelentanoPeppino | Peppino |
 Claudia MoriCarmelina | Carmelina |
 Donatella TurriEmanuela Mazzolani | Emanuela Mazzolani |
 Giacomo FuriaDirettore dell'hotel | Direttore dell'hotel |
 Rosalba NeriMarina | Marina |
 Luigi PaveseM. Mazzolani | M. Mazzolani |
 Carlo CampaniniIl frate | Il frate |
 Gianni AgusGastone | Gastone |
 Nino TarantoCannarulo | Cannarulo |
 Erminio MacarioGiovanni | Giovanni |
 Franco Giacobiniun giornalista | un giornalista |
| RRaffaella De Caroliscapitana Club | capitana Club |
 Antonella Murgiaragazza di Capri | ragazza di Capri |
 Mario Bregabenzinaio | benzinaio |
 Renato TerraRenato | Renato |
| AAnna Maria SurdoMaria Santorini | Maria Santorini |
| NNino Di NapoliLuigi | Luigi |
| NNunzia Fumola madre di Carmelina | la madre di Carmelina |
 Don Backyhimself | himself |
 Miky Del Pretehimself | himself |
 Memo Dittongohimself | himself |