When young Dalia is mistakenly admitted to a mental institution, she is declared sane - but by a truly mad person pretending to be a doctor. The real doctor thinks she is insane - how can she escape this madness?

A tale of the complicated Neapolitan lives and loves of Maria and Alberto; her smuggling father Don Gennaro and some espionage.

Sunday is the only day off that house maids use to date the young men who cross their paths: doormen, soldiers, sailors, timid virgins and lurid husbands, or even a doctor.