#1 Episode 1
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.
Release: 2020-04-17Grade
#2 Episode 2
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.
Release: 2020-04-18Grade
#3 Episode 3
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.
Release: 2020-04-24Grade
#4 Episode 4
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.
Release: 2020-04-25Grade
#5 Episode 5
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.
Release: 2020-05-01Grade
#6 Episode 6
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.
Release: 2020-05-02Grade
#7 Episode 7
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.
Release: 2020-05-08Grade
#8 Episode 8
In Corea, Luna is set free. In Korea, Gon and Yeong run into a man who recognizes them, and Sin-jae experiences childhood flashbacks.
Release: 2020-05-09Grade
#9 Episode 9
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.
Release: 2020-05-15Grade
#10 Episode 10
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.
Release: 2020-05-16Grade
#11 Episode 11
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.
Release: 2020-05-22Grade
#12 Episode 12
Frightening circumstances land Tae-eul back in Gon's arms. When Yeong runs into a woman who looks strikingly familiar, he follows her.
Release: 2020-05-23Grade
#13 Episode 13
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.
Release: 2020-05-30Grade
#14 Episode 14
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.
Release: 2020-06-05Grade
#15 Episode 15
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.
Release: 2020-06-06Grade
#16 Episode 16
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.
Release: 2020-06-12Grade