first thing first . this isn not an action movie although there be a lot of action in it . i think you can compare it to american sport movie . where a team of very bad player succeed in the unthinkable and win a game or tournament beyond expectation . in this case it isn not about football or baseball and but taekwondo . in the beginning these street thug seem to be good for nothing . but soon we will find out that they do not want to be thug and actually achieve something in life . it be nice to see them struggle and train . i be surprised how funny this movie be . from start till the end you will laugh your pant off . the young korean actor be very convincing . go see this wonderful feel good movie .