Xu Jinzhao, a weather forecaster, is at the lowest point in her life when she reunites with Lin Xue, her childhood best friend, who has become a mountain rescue worker. A program called “In Search of the City’s Most Beautiful First Snow” brings the two of them together on a journey. Amid snow-covered mountains and cities, they rescue others and untangle the knots of their past. Their feelings burn bright again through repeated brushes with death and the everyday moments they share.
But just as they promise to welcome the first snow together, a sudden rescue mission leaves Lin Xue forever on the mountaintop. At last, as snowflakes fill the sky, Xu Jinzhao receives a message Lin Xue left behind: “If Jinzhao could share this life with Lin Xue, then we would have grown old together.” Carrying this unforgettable love with her, she learns how to bravely walk the rest of her life alone.