Ai Li Si grew up in a poor single parent family. Since childhood, she has no memory of her childhood. Her only relative, Ai mu, is a mother who cares about her family, is heavily in debt and neglects her duty. However, the bitterness of all this does not seem to have a great impact on her. She is always full of vision and vitality for life. She also believes that her efforts will one day improve the living environment with her mother.