Tells the story of prosecutor Han Ming who is involved in a difficult case where the intentional injury of people is turned into a legitimate defense.

Song Xuan, a cold and introverted schoolmaster, wandered outside with his parents since he was a child, longing for a stable life in his heart. Liu Wen, a boy from the mountain city, is rebellious and has lived with his grandfather since he was a child. Although he has poor academic performance, he is quite famous in school. Due to the job transfer of his parents, Song Xuan transferred from Guangdong to Wanxing Middle School in Chongqing, where he and Liu Wen became classmates. Song Xuan, who had just arrived and had a language barrier, was out of place in the class and was discussed by his classmates. Liu Wen's kind rescue brought Song Xuan a little warmth. In the process of getting along, Song Xuan gradually opened his heart, and the two became friends who talked about everything since then...