Silvia is a beautiful courtesan one admired by all kinds of men, but she pushes them back all because although they her could fulfill her life with wealth, none of them could touch her heart. Finally, she has abjured completely of love, convinced that her destiny is to remain alone. This until Zanetto comes to her door. Silvia recognizes in him her ideal and falls in love immediately. Zanetto sees in Silvia the virgin of his dreams. He appreciates his own freedom and his form of life, but he believes that it might be beautiful perhaps to have a house, and a sister. Zanetto has heard about the beautiful, rich and liberal Silvia, and he is looking for her. Silvia hides her identity, and recommends him not to keep on looking for the courtesan, who would be too dangerous for him. Although the two are mutually in love, she is not ready come forward. He believes in her sincerity, and offers to go in any direction that she indicates. Silvia indicates towards the evening and he moves away running, leaving Silvia to cry.