Viridiana is a young novice preparing to become a nun and devote herself entirely to serving God. A few days before her tonsure, driven solely by a sense of duty, she goes to visit her reclusive uncle, Don Jaime, who has supported her for many years. Viridiana looks exactly like his wife, who died on their wedding night, and Don Jaime decides to keep his niece with him and make her return to the convent impossible…