Gu Xi was watching "Our Boyhood" at home. Suddenly the TV screen went black. She got up and felt dizzy. When she opened her eyes again, she found that she had become Ban Xiaosong's childhood sweetheart. I thought I would spend my youth in peace, but the appearance of a cold young man broke this peace. Let's take a look at how Gu Xi and Wu Tong, happy friends, join hands with Yin Ke to help Ban Xiaosong win the baseball championship, and how she finds her own happiness.