Aristide Buratti (Montagnani) is a wealthy grocer married to attractive Valentina (Russo). Although they seem to have a happy marriage, Valentina feels herself culturally inferior because she is a high school dropout. Despite her husband's objections, she enrolls at a private boarding lycée for her Maturità. Valentina thinks her natural charms will bring her success before the examination board and she inevitably becomes the centre of attraction for the school staff, particularly nerdy teacher Pier Capponi (Enzo Robutti). On the other hand, Aristide gets increasingly jealous of Valentina. He now seeks to infiltrate the school in disguise and starts bribing the janitor (Toni Ucci) to serve this end.