Kwangdong Viper.

After witnessing the brutal murder of his mother, Ma-ryong grows up intent on revenge and sets out to become a master of martial arts. When Ma-ryong kills his mother’s murderer, Il-pyung, the son of Ma-ryong’s enemy, seeks a master to learn how to fight. Ma-ryong and Il-pyung form a bond as master and apprentice leading to an inevitable showdown.