The Death of Queen Dowager - S1.E20

Dong Yi and Cheon Soo go into town to investigate. But, when Dong Yi is alone for a moment, she is captured by Jang Hee Jae's men. They tie her and later throw her into the river. But, Cheon Soo follows them and manages to save Dong Yi. Although she is still shaken from the incident, she wants to continue the investigation. Unfortunately, Jang Hee Jae has been busy killing all the witnesses. Furthermore, to complicate things, the Queen Dowager dies and Southern Faction pushing hard for the Queen to be removed. Then, by the order of the King, the Queen will be dethroned.