Dan O is rescued from a serious threat by Yu Ha, much to San's disappointment for not being the one to save her. Despite this, the danger still hovers over Dan O, and palace officials keep a close watch on her to uncover clues about Lee Seol and the watchman. Upon San's return from the state exam, Dan O urges him to honour his earlier promises and be completely open about himself.

San returns to the palace to fulfill his duty. Now that Dan O finds out his true identity, she is worried about him day and night as he is surrounded by enemies. Therefore, she looks for a way for him to escape and leave the country. Meanwhile, Lord Sin plans to put a fake Lee Seol on the throne.

San is anxious about the possibility of His Majesty treating Dan O poorly upon summoning her to the palace. San remains as close to Dan O as he can, but his concerns for her well-being persist. The more time San spends with Dan O, the stronger his affection for her becomes, although he also despises himself for burdening her with a dark secret. Meanwhile, San is scheduled to meet his friend in secrecy but soon finds himself surrounded by uninvited guests.