About this season
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.
Episodes (16)
1. Episode 1
8.9Aired 17 April 2020 • 73 min
Lee Gon mourns the tragic death of his father. Lee Lim goes on the run — and finds escape when he comes across a door to a parallel universe.
2. Episode 2
8.5Aired 18 April 2020 • 73 min
Gon insists he is an emperor from another world. An incredulous Jeong Tae-eul takes him to the police station, where he sees a familiar face.
3. Episode 3
7.8Aired 24 April 2020 • 72 min
Though Tae-eul finds Gon's story difficult to believe, some things about him are completely inexplicable. At work, she gets busy with a murder case.
4. Episode 4
9.5Aired 25 April 2020 • 73 min
When Tae-eul loses her police badge, she can't help but think about Gon. Meanwhile, Kang Sin-jae has had it with his mother's bad habits.
5. Episode 5
8.8Aired 1 May 2020 • 73 min
Being introduced to Gon's world is a lot to process for Tae-eul, who's taken to the palace. A disgruntled Jo Yeong keeps an eye on her.
6. Episode 6
8.7Aired 2 May 2020 • 73 min
A potential military conflict threatens the kingdom. Gon promises Tae-eul he will return to her, and steps forward to take care of the situation.
7. Episode 7
7.6Aired 8 May 2020 • 73 min
Gon brings Yeong along on his trip back to Tae-eul. He has a favor to ask of her, while she's found something troubling to share with him.
8. Episode 8
9.0Aired 9 May 2020 • 73 min
In Corea, Luna is set free. In Korea, Gon and Yeong run into a man who recognizes them, and Sin-jae experiences childhood flashbacks.
9. Episode 9
9.5Aired 15 May 2020 • 72 min
Gon draws closer to tracking down Lim, and asks Jo Eun-sup to trade places with Yeong. Mail from an unknown sender bothers Koo Seo-ryeong.
10. Episode 10
9.0Aired 16 May 2020 • 73 min
On Lunar New Year, Gon and Lim come face-to-face in a public standoff. Tae-eul opens up to Sin-jae about the other world and her ongoing case.
11. Episode 11
9.5Aired 22 May 2020 • 72 min
A compelling offer finds its way to Luna. Gon's investigation into a devastating murder leads him to an old traitor and a clearer idea of Lim's schemes.
12. Episode 12
9.8Aired 23 May 2020 • 72 min
Frightening circumstances land Tae-eul back in Gon's arms. When Yeong runs into a woman who looks strikingly familiar, he follows her.
13. Episode 13
Aired 30 May 2020 • 73 min
Knowing Seo-ryeong is up to no good, Gon throws her in a tight spot. Upon returning to her world, Tae-eul realizes Luna is there, too.
14. Episode 14
8.5Aired 5 June 2020 • 72 min
Gon and Tae-eul are separated when he sets out to fulfill what's been his fate all along. Sin-jae makes a startling discovery.
15. Episode 15
8.0Aired 6 June 2020 • 81 min
Lim plots his next meeting with Gon. Understanding there's only one thing he can do to right wrongs, Gon comes to a heart-wrenching decision.
16. Episode 16
7.5Aired 12 June 2020 • 77 min
A final attempt to put a stop to Lim's ambitions comes with profound consequences. Gon travels far and wide in search of Tae-eul.