The Tale of Nokdu S01E03 - The Past of Nok Du's Father

At night, Nok Du happens to overhear the conversation of a group of widows who look like trained assassins. Nok Du starts to follow one of them into the woods. Meanwhile, Nok Du's father and brother move from the island to the mainland. Yun Jeo, Nok Du's father, decides to go to Hanyang to take care of unfinished business