In the "Yuqing" cram school, repeat student Lei Ming met the gentle and tough transfer student Tong Yao. They support each other, develop secret feelings, and face the pressure of entering higher education together. However, a female student jumped off a building due to unbearable pressure (there was a brief encounter with the nursery rhyme), and an exercise book full of nursery rhyme notes left at the scene brought the nursery rhyme into huge criticism. In order to protect Tongyao, and because of his own pain and powerlessness, Lei Ming chose to leave without saying goodbye, and the two broke off contact.
After being tempered by society, Lei Ming finally returned to his original intention of education and became the "counterattack coach" of Minglong Experimental Middle School. Forming Class 11, they use unique methods to save confused students, but deep down in their hearts are hidden guilt for the past and a vague figure.
·Tongyue completed her studies despite the "stigma" and became an excellent psychological counselor. She turns pain into strength and specializes in helping troubled teenagers. She looks gentle and peaceful, but in her heart she can't let go of the name "Thunder".
For a student in Class 11 of Minglong who had a serious psychological crisis, the school specially invited psychologist Tong Yao to intervene. In the conference room, Lei Ming and Tong Yao's eyes met again after many years. From the initial shock and avoidance, to having to fight side by side to protect the students together. In the process of untying the knots in the students' hearts, they also peeled away the misunderstandings and their own knots layer by layer.
