Lee Yul begins a secret investigation after growing suspicious of his worsening health. Yun Hong Shim returns to Hanyang in search of her brother.

Yul uncovers the mastermind's identity and Kim So Hye's secret before coming under attack in the forest. Hong Shim is punished for refusing to wed.

Yul loses all memory, but gains a new identity as Na Won Deuk. Hong Shim begrudgingly chooses to become a wife to avoid life as a concubine.