"Spirit of jeet kune do."
A model student transfers to the notorious Jungmoon High School known for its severe corporal punishment by teachers and power struggles between school gangs.
Yoo HaDirector
Hyeon-su
Woo-shik
Eun-ju
Cha Jong-hoon
Ham Jae-bok
Seong-hun
Young Hyeon-su
Yasaengma Gang Member
Yasaengma Gang Leader
Jiksae
Cheetah
Teacher
Choi Byeong-sam
English Teacher
Hyeon-su's Father
Hyun-soo's Mother
Jong-hoon's Mother
P.E. Teacher
Politics & Economics Teacher
Boniface
Student
Korean crow-tit's gang
