In a single-parent family, the mother was born unable to speak. There were two sisters in the family. The elder sister went to work in W City, while the mother went to work as a nanny in a rich man's house. The younger sister was still in high school and had to work part-time during holidays or after school. The mother and younger sister lived in the rich man's home. One time, the mother accidentally asked her younger sister to send money to her sister in W City, but this time it did not go well. The journey was bumpy and she met a boy. , And then she returned to D City. When school was over, she met the boy she met in W City again. As time went by, she gradually learned that the boy was the second son of a rich family. Later, the boy and the girl realized that they had already fallen in love with each other, but due to the disapproval of their families, they did not give up on each other. After many twists and turns, the girl and the boy finally got together.