
Plot
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.
Trailer
Cast

Jeong Jun-ho
Gye Do-shik

Jung Woong-in
Kim Sang-do

Jung Woon-taek
Dae Ka-ri

Oh Seung-eun
Lee Yoon-joo

Song Sun-mi
Lee Ji-sun

Park Jun-gyu
Cho Bong-pal

Kang Sung-pil
Yang Dong-pal

Gi Ju-bong
Sang Chun-man

Yun Mun-sik
Salsale

Go Myung-hwan
Flasher

Park Tam-hee
Kim Ji-hye

Lee Si-yeon
Heo Ri-su

Kim Sang-joong
Oh Sang-jung

Im Chang-jung
Hyeok-sam

Ji Dae-han
Myeong-do Boss