잃어버린 기억을 되찾은 평강은 온달에 대한 죄책감으로 괴로워한다. 한편 사라진 평강을 애타게 찾던 온달은 평강이 고구려의 공주라는 사실을 듣고 충격을 받는데...
Go Geon reports to King Pyeongwon that Princess Pyeonggang is alive, showing him the jade necklace as proof. He promises to bring her back safely to the palace without his father, Go Won Pyo, knowing about it. Meanwhile, Ga Jin tries to change On Dal's heavy conscience as he turns his back on her... After conspiring with Go Geon, Hae Mo Young, the owner of the herb store, brings a body of a woman who could be the King's assassin to Go Won Pyo. Although Go Geon confirms it to be the Princess, Go Won Pyo thinks otherwise. Meanwhile, Ga Jin helps On Dal dig a well for the village, and Du Jung Seo sends San and Jin on a mission to kill Go Won Pyo.
