Born in South Korea, he is a prominent film director and screenwriter known for his work in the thriller and action genres. He initially gained recognition for his screenwriting, contributing to notable films like "I Saw the Devil" and "The Unjust." He made his directorial debut with "The Showdown" in 2011, but it was "New World" in 2013 that established his reputation as a director. His films often explore themes of crime and morality, marked by intricate plots and intense character development.