King Jeong Jo has been in power for only one year. He has already gone through several failed assassination attempts on his life and his hold on power is fragile at best. He trusts only his eunuch named Sang Chaek and the Commander of Geumwiyoung named Hong Kook Yeong. Meanwhile, Queen Jung Soon and the vassals from Noron plot to assassinate King Jeong Jo. Outside of the palace, Eul Soo was raised as an elite assassin by Gwang Bae. Gwang Bae then orders Eul Soo to kill King Jeong Jo otherwise his love Wol Hye will be killed.