Equality Before the Violence

Dong Ho is ranked number 1 in "Arena," an illegal gambling league for teens, but he steps down to prepare for college. However, the members of "Arena" don't want to lose their biggest money-maker, so they place a debt on his brother Dong Min. Dong Min literally fights against his debt, but when he gets hurt, Dong Ho decides to fight back.
(Source: HanCinema)