River Where the Moon Rises S01 E10 Episode 10

"Pyeonggang’s vie for power could very well cost her everything. Will the price she realizes she must pay prove to be too much?"

Ga Jin and Dal come to Ghost Valley to live with Lady Sa. They lie to her that they are now married, hiding the fact that they are there to train Dal in swordsmanship. However, Lady Sa has a hard time accepting the princess as her daughter-in-law. Meanwhile, Geon becomes the Crown Prince’s trainer, but the young prince refuses to leave his chambers.