Youth is a clear pain. In the winter five years ago, Xia Tian, who lost his twin sister, and his parents exiled themselves from the north to the warm and warm southern town in order to heal the pain in their hearts. There, Xia Tian met the unique and mysterious boy Leo. Like Elizabeth and Darcy, the two were prejudiced against each other at first. The album incident and the birthday card brought the two closer and closer, becoming close friends and developing a subtle affection. Like all the boys and girls in the typhoon season, they were preparing for the college entrance examination and enjoying their youth. They agreed to go to Slovenia together, take the college entrance examination together, and celebrate birthdays together. When everything went according to plan, Leo left without warning. Ning Muchen, who had been silently caring about Xia Tian since then, walked into Xia Tian's life, but he always regarded her as the shadow of her deceased sister. Dragging her tired body, Xia Tian returned to her hometown alone. The white snow in the sky was exactly the same as when she left, and Leo had been waiting for her. On the road of youth, some things are destined to be lost, leaving no traces like snow melting, while others have been waiting, experiencing the dream-like pursuit, letting go, and after waiting, they will always have an epiphany, because things in those years are the most beautiful.