Gül is a young girl who works as a cleaner at the conservatory. She secretly cares for the students at the school. Meral, the daughter of a wealthy family, is a student at the school and is engaged to a young man named Selim. However, Meral's conceited, snobbish, and spoiled behavior bothers Selim and causes him to not want to marry her. One day, when no one is in the classroom, Gül plays the piano and sings. Selim, who has come to pick up Meral from school, thinks that Gül, whose voice he likes very much, is a student at the school. He meets her and invites her to his birthday party. Gül accepts the invitation, but Meral reveals that she is a cleaner. Gül is embarrassed. However, Selim is very fond of her, and their relationship progresses. Selim's father is on the verge of bankruptcy. His only salvation is his son's marriage to Meral, and Selim reluctantly agrees.