During the chaos of the upheaval, she was captured by Qing soldiers along with her parents and taken to Qing. After losing her father there, she and her mother lived as slaves to the Qing people. With the help of Kang Hee Soo and Choo Dal Ha, they managed to return to Joseon. After her mother passed away from an illness she contracted during her time as a slave in Qing, she became the daughter of Se Dong and Jin Yi. However, for the sake of Kang Hee Soo's revenge, she enters the palace and becomes a court lady who conveys information.
She plays a crucial role in delivering letters and assisting Kang Hee Soo in obtaining valuable information within the palace.
(Source: Korean = NamuWiki || Translation = MyDramaList)
