Auteur Silvano Agosti wrote, produced, directed, edited, and photographed this spicy Italian comedy about a husband trying to rekindle his marriage. A filmmaker (Franco Nero) is worried that the spark has gone out of his marriage to Anna (Eleonora Brigliadori), an attractive blonde several years his junior. The director isn't certain if Anna's disinterest in the bedroom is due to his infidelity, their inability to have a child, or simple depression on her part, but he starts to wonder if their 15-year marriage may be coming to an end. One night, the filmmaker hears his wife murmuring a number of erotic suggestions in her sleep, and he's more than willing to comply with her wishes when she awakens, whether it means an all-green wardrobe or seducing her during the next rainstorm. Silvano Agosti actually decided not to write the score for La Ragion Pura himself, instead allowing veteran composer Ennio Morricone to provide music for the film.