When Zhu Qianshuang was in high school, she was still a fat girl and fell in love with Qiao Ye, a male classmate who was high up in the school. However, she did not dare to confess her feelings and could only make up her mind to lose weight. After trying various weight loss methods such as dieting, taking diet pills, inducing vomiting, and electrotherapy, Zhu Qianshuang not only did not lose weight, but was excluded and ridiculed by the people around her. Zhu Qianshuang's efforts that had persisted for a long time were beaten back to their original form, and this secret love ended in vain. After graduation, the two went their separate ways, as if they had never met each other, but what she didn't know was that the joy and depression she had experienced also happened to Qiao Ye, but for various reasons, the two did not express their feelings. The two people who taught each other to be brave missed each other regretfully and disappeared in each other's youth.