Cipriano Duval is an Italian who has emigrated to Paris, where he works in a pediatric clinic as a nurse.

A comedy of errors where floundering pediatrician Pietro takes a job as an orphanage health inspector to pay for the debts of his high-spending girlfriend Loletta, only to end up mistakenly engaged with Lilli, the daughter of a wealthy businessman, and pursued by lovestruck 18-year-old orphan Teresa Venerdì.

A sweet young woman who's an orphan is enamored with fairy tales and fantasizes that she's really a princess to help her through her life in the orphanage.