This is a youth story about secret love, growth and reunion. The female protagonist Xia Luohan has been secretly in love with the male protagonist Shi Ji from junior high school to high school, but because of her introverted, slow-tempered, stubborn, but tough-hearted personality, she never had the courage to express her feelings. Although the male protagonist Shi Ji looks handsome, unruly, and rebellious, he is gentle and kind in his heart. Every "fight" he has has a reason behind it. The two failed to get together due to various misunderstandings and misses in their youth, but they reunited by chance many years later and finally came together. Through the perspective of the heroine, the story shows a young and profound secret love, and how the unspoken regrets in youth are fulfilled in adulthood.