The article mainly uses bathing as the first point of view, telling every detail of Class S of Leland College, the shy and sensitive Mu Yu, the dual personality Clete, the aggressive and arrogant Qin Yuhan, the yandere Mu Feng who always cares about Mu Yu, the scheming student council president Lin Yi, and the pretentious and lame Selina. It all contains bits and pieces of high school life, some of which may be a bit too much, but they become a projection of high school life. High school life is really like this, with the color of a rose and the touch of a thorn. How can a glass-like heart survive these extraordinary days? Unstable promises and false smiles have become an indelible pain in this era. "Have you seen me standing here? Why do you hug her and say you still love me?" Such words are too surprising. How can a broken heart be reunited, and how can a fleeting friendship be grasped? The poppy-like dream is about to begin. Mu Yu gradually falls in love with him but discovers that he is actually a patient with dual personality, and the other half of his personality has always wanted to get rid of Mu Yu. At this time, Selena used her cute appearance and the advantage of coming back from abroad to hook up with the boys in the class and take the opportunity to stimulate Mu Yu, but Qin Yuhan discovered Selena's conspiracy. So Qin Yuhan teamed up with Mu Yu to expose Selena. A series of things surrounded Class S. What will happen next?