After facing Yi In in a game of baduk, Kang Hee-soo develops feelings for him. Meanwhile, Yi Seon grows increasingly ill, creating a succession crisis.

Kim Myung-ha urges Hee-soo to stop her ruse. When a royal crisis arises, Kang Hang-soon performs a selfless act — but Kim Jong-bae schemes against Yi In.

After a confrontation with Yi Seon, Yi In ascends to the throne — but not without opposition. In the process, he cruelly turns a blind eye to Hee-soo.