Thanks to Won-gyeong's efforts, the movement to restore the former king is completely defeated, but Yeong-sil is unexpectedly involved. Bang-won tries to protect Yeong-sil, the concubine who is implicated in the treason, even breaking his principles. Won-gyeong feels a great shock, betrayal, and jealousy at Bang-won's attitude. Won-gyeong is the head of the palace concubine who has the power to save Yeong-sil. Instead of asking Won-gyeong for a regrettable favor, Bang-won tries to turn the situation around by abandoning Yeong-sil...

Finally, when the investigation team causes trouble and Bang-won goes on a campaign, Won-gyeong puts aside her resentment toward Bang-won, realizes her passionate love for him, and mobilizes her intelligence and everything she has to help Bang-won. In her negotiations with Lee Seong-gye, Bang-won promises one thing. He will cut off the vested interests based in Gaegyeong and return to Hanyang. However, the core of those vested interests includes Won-gyeong's maternal family, the Min family.