On the first day of the second year of high school, Su Wanxing, an introverted and taciturn academic, unexpectedly became roommates with Lu Yu, a well-known "problem boy" in the school. One is a good girl who is immersed in her homework and speaks in a soft voice, and the other is a rebellious boy who sleeps in class and occasionally skips classes but is very handsome. The two people who should have had nothing to do with each other are bound by accidents again and again - Su Wanxing helped Lu Yu make up homework to avoid being checked by the teacher, Lu Yu rescued Su Wanxing and drove away the harasser, secretly passing notes in the self-study class, unexpected support at the sports meeting, the embarrassment of sharing an umbrella on a rainy day... The summer wind swept the sycamore leaves past the classroom window, and little secrets no one knew were carved on the old desks. Beyond the labels of "student tyrant" and "student scumbag," the two got a glimpse of the softness hidden in each other's hearts: Su Wanxing was burdened with the high expectations of his parents and was depressed, while Lu Yu deliberately pretended to be rebellious due to family reasons. When rumors hit and the pressure to enter a higher education increases, do they choose to bow to reality, or hold each other's hands and run towards a future with each other? This is a youthful throbbing about growth and redemption, hiding the cautious love that every girl has had in her school days.