Zhang Wansen (Qu Chuxiao) planned to confess his love to Lin Beixing (Zhang Jianing), the girl he had a crush on for a long time after the college entrance examination. However, a sudden concert accident turned everything into an irreparable tragedy. Unexpectedly, the painful and helpless Zhang Wansen accidentally restarted this summer and returned to Lin Beixing before the tragedy. The secret of restarting summer did not seem as simple as imagined... This time, can Zhang Wansen, who has tried his best, successfully protect Lin Beixing and make all the unforgettable regrets come true? At a certain moment in the flow of the stars, can the heavy snow in youth fall on the two people in love?