Kagami Rei (Yamada Ryosuke) and Serizawa Ichika (Kinami Haruka) solved the bullying problem that occurred in Class 30.However, before I could feel relieved, something went wrong again. This time, a school grade list was posted in the classroom to rank the students in Class 0, from Army 1 to Army 3.

Kagami saw it and said: “This is an incredible system. Why are students with poor grades and conduct at the top of the pyramid!”.Serizawa ignored Kagami like this and told the students to tear it up immediately.One of the students, Tian Marumoto (Koizumi Mitsusaki), said: "Whether it is posted or not, there is a class system in the school anyway", and his words were echoed by many students.

Everyone in Class 0 was in chaos because they cared about the class system.Dean of Students Junpei Dohashi (Munenori Nagano) and others ordered Kagami to find a solution before Todo Yukimi (Azusa Ohara) and Naoto Konno (Genta Matsuda) and others came back.

That night, Kagami asked Teach (Yumi Adachi) how to eliminate the school's class system.Teach made a suggestion to Kagami.Kagami wants movie guru Suzuki Tsukasa (Kashiwagi Yu) to make a movie and let him exhibit it at the film festival.At the same time, Yukimi and others formulated a plan to get rid of Kagami.

The Film Festival of Class 0 and the Revenge of the First Military Students.The two lines are intertwined, leading to an unpredictable ending.