Sword (1969)

Jang-bae escapes from prison where he was unjustly placed by his enemy, Min-chung, 20 years earlier. He locates his daughter and learns that Min-chung attacked his family. Most were killed but some escaped death and scattered across the country. Jang-bae finds himself forced to kill his own son who is now a mercenary in Min-chung's employ. His son's death adds to the growing list of crimes for which Jang-bae will have vengeance