Two girls with very different personalities grew up together. The girl Muzi has always been unsettled. She moved between different boys during her school days, and she has her own set of opinions and theories on love. Her good friend Qing Qing is a good student with excellent academic performance, but under his obedient appearance, he actually hides a stubborn and sensitive heart. Throughout their growing up years, the two of them were almost inseparable. There was always a haughty quality in Muzi's eyes, which made Qingqing have another suspicion about her views and feelings towards herself after she passed through puberty... The feelings towards Muzi gradually evolved from the initial sincerity to turbulence... These are all kinds of conflicts derived from the alternation of emotions, moods, and inner changes between the two girls. The torture of friendship... Misunderstanding is often the primary source of conflicts.