The story takes place in a modern city. The protagonist is an ordinary high school girl named Li Xue. Naturally introverted and quiet, she gets excellent grades but isn't good at socializing. By chance, she is caught up in a mysterious accident that transforms her into a girl completely different from herself. In her new form, she has an appearance, temperament, and abilities she never had before, and this change profoundly affects her life.
At the same time, she begins to discover complicated feelings for girls she never paid much attention to before, especially her classmate Shen Yuwei, a girl who looks strong on the outside but is softhearted within. As time goes on, Li Xue and Shen Yuwei grow closer, and their romantic relationship gradually unfolds.
