Insurance executive Charles suspects his wife Hélène of playing the field, so he has a private detective locate his wife's lover, author Victor Pegala.
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.
Rossella, a beautiful young girl that lives in a family of popular class, looks for a job every day but soon discovers that the "greasy pole", which is the economic miracle, is only an illusion, and the world is far more ruthless than she could believe. But fate brings together Giuliano, the only man who did not ask for anything and who - like her - is not inclined to compromise.