Khoshgeltarin zan-e aalam

After the death of her mother, a girl is lost and desperate until she meets Behrouz. Behrouz gives order to her life with interest and introduces her, who is prone to singing, to a friend who is a music teacher and soon she becomes the daughter of a famous singer. An incident causes the girl to make a mistake about Behrouz and leave him. After breaking up with Behrouz, the girl is disappointed and withdrawn from everyone and quits her job, but Behrooz, who loves the girl, finds her and explains the truth to her.