Special Episode 1 S00 E01

Kim Soo-hyun (as King Lee Hwon) Yeo Jin-goo (as Lee Hwon (young)) Han Ga-in (as Heo Yeon-woo / shaman Wol) Kim You-jung (as Heo Yeon-woo (young)) Jung Il-woo (as Prince Yang-myung) Lee Tae-ri (as Yang-myung (young)) Kim Min-seo (as Yoon Bo-kyung) Kim So-hyun (as Yoon Bo-kyung (young)) Sunwoo Jae-duk (as Heo Young-jae) Song Jae-hee (as Heo Yeom) Yim Si-wan (as Heo Yeom (young)) Yoon Seung-ah (as Seol) Seo Ji-hee (as Seol (young)) Ahn Nae-sang (as King Sungjo) Kim Yeong-ae (as Queen Dowager Jung-hui) Nam Bo-ra (as Princess Min-hwa) Jin Ji-hee (as Min-hwa (young)) Song Jae-rim (as Kim Jae-woon) Lee Won-keun (as Kim Jae-woon (young)) Kim Ye-ryeong (as Lady Park) Jeon Mi-seon (as Jang Nok-young) Yang Mi-kyung (as Shin Jung-kyung / Madam Heo)

based on novel or book joseon dynasty (1392–1910)