S1·E3 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.