When a young gang leader seems to be just a bit too stupid to effectively carry out his daily tasks, his superiors order him to go back to school for his high school diploma. Posing as a 19-year-old, he soon learns that the school is even more corrupt and vicious. Wrath is unleashed.

• CJ Entertainment
• Cinema Zenith Entertainment
• Jeong Jun-ho
• Jung Woong-in
• Jung Woon-taek
• Oh Seung-eun
• Song Sun-mi
• Park Jun-gyu
• Kang Sung-pil
• Gi Ju-bong