In Huining County, Gansu Province, a county on the loess plateau, every family attaches great importance to the college entrance examination. There are 64 students in Class 16 of Grade 3 of Huining No. 2 Middle School. The school has set a high target for the 30-year-old head teacher Hou Xiaobing. Hou Xiaobing, who led the college entrance examination class for the first time, knows that this is a dead task that must be completed, so Hou Xiaobing can only play the role of "devil", He has formulated the most demanding work and rest plan for the whole grade. However, with the approaching of the college entrance examination, various situations of Class 16 have emerged in endlessly. Some students have problems with their spirit due to excessive pressure, and their own management style has been ridiculed and questioned by other teachers, but it is a battlefield without retreat.
The film is a series of three feature films, which will be shot into Class 16, Grade 3, Huining No. 2 Middle School. The capture of the students' learning, life and psychology in the past year, as well as the assessment of the school, teachers' efforts, parents' expectations, etc., objectively reflects the true performance of all levels under the pressure of the college entrance examination.