Korean emperor Lee Gon tries to close the doors to a parallel world which was opened by demons; a detective tries to protect the people and the one she loves.
Media
![Official Teaser [ENG SUB]](https://i.ytimg.com/vi/DWRtVkheXVc/hqdefault.jpg)
Official Teaser [ENG SUB]
![Official Teaser #2 [ENG SUB]](https://i.ytimg.com/vi/zmieBMVgjTI/hqdefault.jpg)
Official Teaser #2 [ENG SUB]
![Official Trailer [ENG SUB]](https://i.ytimg.com/vi/N1L1iaFZQ9I/hqdefault.jpg)
Official Trailer [ENG SUB]
Cast
Lee Min-ho
Lee Gon
Kim Go-eun
Jung Tae-eul / Luna
Woo Do-hwan
Jo Eun-sup / Jo-young
Kim Kyung-nam
Kang Shin-jae
Jung Eun-chae
Goo Seo-ryung / Goo Eun-ah
Lee Jung-jin
Lee Rim
Jeon Moo-song
Lee Jong-in / Prince Boo-young
Kim Yeong-ok
Noh Ok-nam
Jeon Bae-soo
Jung Do-in
Seo Jeong-yeon
Song Jung-hye
Park Won-sang
Park Moon-shik
Park So-jin
Jo Hae-in
Baek Hyun-joo
Lee Gon's Secretary
Kang Hong-suk
Jang Michael / Jang Mi-reuk
Kim Yong-ji
Myung Na-ri / Myung Seung-ah
Lee Hong-nae
Seok Ho-pil
An Si-ha
Kim Hee-joo
Choi Woo-sung
Kim Ki-won
Jung Hyeon-jun
Young Lee Gon / Lee Ji-hun
Kim Si-woo
Young Jung Tae-eul
Moon Woo-jin
Young Shin-jae / Kang Hyun-min
Noreen Joyce Guerra
Moon Seung-ih
Lee Hae-yeong
Yoo Kyung-moo
Yoon Ju-man
Young Yoo Kyung-moo
Hwang Young-hee
Min Hwa-yun / Park Sook-jin
Ryu Sung-rok
Kyu-bong
Heo Dong-won
Detective Shim
Song Sang-eun
Kyung-ran
Hwang Se-on
Park In-young
Shin Hyeon-jong
Lee Jung-hoon
Lee Hwang-eui
Prime Minster's Adviser
Kang Ki-doong
Secretary Kim
Jang Hae-min
Prime Minster's Staff
Kim Jung-young
Kim Sung-ae
