KO One (2005)

Wang Da Dong (Jiro Wang), a student at Ba Le High School, leads a group of delinquents who possess special powers that are ranked according to their "battle level" on the "KO chart." Wang Da Dong quickly takes new students, Ya Se Wang (Calvin Chen) and Ding Xiao Yu (Aaron Yan), under his wing and the trio become best friends. Meanwhile, former student, Lei Ke Si (Danson Tang), rejoins the class and strange events start to occur that always lead back to Ya Se Wang. Is Lei Ke Si a weakling with good intentions or does he hide a sinister secret? Is evil lurking in their midst?