It tells the story of Qin Feng and Ruolan growing up in a compound. Qin Feng was discriminated against because of his stuttering, but Ruolan was the only one who treated him sincerely. In high school, Ruolan's casual joke "I will marry you if a rainbow appears in the sky on a snowy day" was remembered by Qin Feng. As time passed, the two experienced separation and growth. This agreement became an unchanging belief in Qin Feng's heart and affected their life trajectories. In the intertwining of fate, they continue to pursue true love and themselves
