Lee Seong-han

Jjang-gu joins "Monster," a violent organization at his high school. As a rite of passage, he learns a lesson about being a man while following the course.

Gwang-tae is pressured to pay his debt by a loan shark, and finally decides to sell his liver for the money. He asks his friend Gil-do to make an arrangement, and is contacted by yakuza who want to save their dying boss. But Gil-do disappears with Gwang-tae's money, and Gwang-tae holds out against the gang, saying he is not going to Japan until he catches Gil-do. So Gwang-tae and the yakuza chase after Gil-do, and in turn, the loan shark chases them.

Baji (Han Jae-Suk) is tops in his field for organizing underground fights with illegal wagers placed on the fights. The owner of the location for the underground fights is Boss Jang (Song Young-Chang). Baji is now in serious debt and Boss Jang recommends a way for him to climb out of his debt. Baiji lets gambler James (Jung Sung-Hwa) join in on the illegal wagers. James is very sharp and also wields considerable financial power. Baiji then puts together a 9 member team to manipulate the bets. Baiji's girlfriend Seon-Nyeo (Park Seong-Woong) joins the team. The fights progress as planned, but with 2 fights left Boss Jang and James comes to Baiji looking for a piece of the action. The betting has now completely changed. There is only one fight left and the battle of wits begin ...

Min-jae is a highschool teacher during the day, but at dusk, he goes out on the streets and join with youth who are alienated from school and home. Due to an incident, Min-jae is put to the test again to protect his students ─ Ji-geun and classmates.