A fantasy romance drama about two parallel universes. One universe resembles modern-day Korea as we know it, while the other is an alternate universe in which Korea is an empire ruled by a single monarch. In order to fight evil and close the door between their two worlds, the ruler of the Korean Empire ends up joining forces with a detective who resides in modern-day Korea.
Original title 더 킹: 영원의 군주
First air date Apr. 17, 2020