The Code of Duel

Ken has just moved from Kansas with his mother. He talks to a girl named Julie, not knowing that her boyfriend Tom is very possessive of her. Tom is learning karate from Lee, a sensei whose brother was killed by a rookie cop named Billy. Billy has since then become the janitor of the school that Ken, Julie and Tom go to. When Ken gets beaten up by Tom for talking to Julie again, Billy helps Ken by teaching him how to defend himself, which eventually leads to a battle between student vs. student, and sensei vs. sensei.

Jong-dae and Yong-ki make a living by picking up paper and empty bottles. Both then join different gangster clan and becomes involved in a struggle of political interests over development in Gangnam, Seoul.

Jeff, a young delinquent, is enrolled by his father in a kenpo school, in the hopes of teaching the boy some self-discipline. Years later, Jeff's mentor, Kim, is being threatened by one of the Korean mafia families. Jeff tries to help his old friend, but is too late to prevent Kim's death at the hands of an unknown hitman. Vowing revenge, Jeff takes on all of the families, using his martial arts skills to find the man who killed his friend.

Martial arts fighter Joe goes to prison for four years and takes his wife's blame for a drug bust. After his release, he learns that his son needs expensive surgery because of a life-threatening tumor. Joe's only chance to save him: a brutal all-styles tournament with a $100,000 prize.

After being blinded in a coup against the king, Joseon's greatest swordsman goes into hiding, far removed from his city's anguish. But when traffickers kidnap his daughter, he has no choice but to unsheathe his sword once more.