The novel focuses on five high school students, including Lin Ran and Song Xinyu, and depicts the choices they made during their ordinary but extraordinary three years of youth as they faced the pressure of entering higher education, family expectations, budding love, friendship breakdown, and self-growth. The story includes hilarious campus daily life, touching late-night conversations, and growth brought about by unexpected events. Each chapter is both independent and connected to the past, with both laughter and tears. Finally, it gives a warm and healing ending at the end of the college entrance examination, truly conveying the meaning of youth: stumbles, but worth everything.