Liu Kai, who was heartbroken in college, met the mysterious girl Xu Zhihui while singing K again, and was attracted by her mysterious temperament. After getting to know her, he learned about the past behind her mystery.
Xu Zhihui, who was born in a single family, came to seek refuge with her aunt who was teaching because of her mother's illness. She entered a prestigious local school and met a group of friends. Xu Zhihui, who wanted to study hard, was told by her friend Du Juan that she fell in love with Lin Fei, a handsome rich man, and... `Asked me to help send love letters, but unexpectedly the object of Lin Fei's admiration was me. At this time, my friend Peng Hao also told me that he also liked me. Where should Xu Zhihui go? ```How should the hymn of youth be sung```````