en Cuevana 3. It is about the marriage between Murat, a factory worker, and Filiz, who belongs to a wealthy family. Murat lives with his sister Nil. Nil, who has a beautiful voice, attends the conservatory. Filiz and Şule, who are step-sisters, are Nil's friends from the conservatory. Filiz is the daughter of businessman Osman Bey. Şule is the daughter of Osman Bey's second wife, Lale. While Şule and the other students at the conservatory tease Nil, Filiz stands up for her. Nil, who has a heart condition, dies. Filiz, who is in love with Murat, breaks ties with her family and marries Murat. Years later, Filiz and her family will meet again.