Dai Minghao and Qiao Senyu met in the examination room of the high school entrance examination. Dai Minghao, who has excellent grades, was successfully admitted to a key high school, but Qiao Senyu, a troubled boy, was forcibly sent to Dai Minghao's high school by his parents. Because of a chance encounter and a greeting on the playground, his parents arranged for him to be in the same class and at the same table as Dai Minghao, euphemistically known as "those who are close to Zhu are red". Qiao Senyu, who was still wasting his time in high school, met a group of "friends" in the outside class. The "friends" kept causing trouble for Qiao Senyu because of his superior family background. Once after school, Qiao Senyu was surrounded by masked "friends" in a corner. Dai Minghao, who was passing by, rescued Qiao Senyu and persuaded Qiao Senyu to study hard. But the resentful Qiao Senyu did not listen to the advice, but became more and more depraved. Su Tianyang, Qiao Senyu's only trusted friend, asked Dai Minghao to bring him on the right track, but Dai Minghao, who had always disliked Qiao Senyu, refused Su Tianyang's request...