Duel: Final Round (2016)

Plot

Kang-Ho, a celebrated police officer known for his courage, faces a shocking turn of events when he discovers a mutilated body in the river. Confronting the suspected killer alone, he is brutally defeated and falls into a coma. Driven by vengeance, his younger brother Poong-Ho seeks revenge but quickly realizes he’s outmatched. A chance encounter with Mr. Hwang, an unassuming old man with the skills of a drunken master, changes everything. Desperate to avenge Kang-Ho, Poong-Ho undergoes rigorous training. Will he emerge strong enough to confront the man who nearly destroyed his brother?