After she and her mother escape the same fate, Sungnyang disguises herself as a man and works to free women who are sent to be Yuan concubines.

Sungnyang reveals to the Crown Prince that there is a spy living among them; Prince Togon is exiled to Koryo.

Sungnyang mistakes the Yuan Prince for a Yuan soldier; the Koryo King barricades the prince within the Koryo palace for his own protection.

The Yaun Prince asks Sungnyang to teach him how to protect himself; El Temur plans to attack Daechong Island in order to kill the prince.

Sungnyang and Prince Togon continue their journey to Kaegyong to find the Koryo King; El Temur takes over Koryo's palace.

Yom believes Sungnyang's trick and brings Prince Togon's body into the palace; Prince Togon is conflicted between telling the truth and becoming emperor of Yuan.