Liu Xiaoxiao, a high school girl who is strong on the surface and fragile on the inside, falls off a cliff in an accident and travels through time and space. She meets the gentle and elegant Shaozhuang Chairman Mu Xuan, the handsome and domineering Ling Hufeng and a group of friends who share the same difficulties. This little girl struggles in this strange world in order to protect her friends and find her own happiness.