Goodeoki rejects Yoon-gyeom’s marriage proposal and reveals that she is slave-born. Yoon-gyeom also reveals one of his secrets to make Goodeoki feel safe, and they end up getting married. Later, Goodeoki finds out that Yoon-gyeom has been a part of an organisation that helps children who have nowhere to go. Chief Lee hears about the organisation and accuses them of planning treason.