Princess Sookmyung proposes fatal training for the Hwarang. Master Youngshil finds proof that the king is a Hwarang member.

Cast: Park Seo-Joon, Ara Go, Park Hyung-Shik, Minho Choi, Ji-han Do, Jo Yoon-woo, V, Da-In Lee, Ji-Soo Kim, Kim Chang-wan, Yoo Jae-Myung, Jin Ju-hyeong, Hyun Joon Kim, Kim Kwang-gyu, Dong-woo Shin