Seasons & episodes

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S1 · E1Episode 1 2020-04-17 · 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.

S1 · E2Episode 2 2020-04-18 · 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.

S1 · E3Episode 3 2020-04-24 · 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.

S1 · E4Episode 4 10.0 / 10 · 1 published rating 2020-04-25 · 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.

S1 · E5Episode 5 10.0 / 10 · 1 published rating 2020-05-01 · 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.

S1 · E6Episode 6 10.0 / 10 · 1 published rating 2020-05-02 · 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.

S1 · E7Episode 7 10.0 / 10 · 1 published rating 2020-05-08 · 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.

S1 · E8Episode 8 10.0 / 10 · 1 published rating 2020-05-09 · 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.

S1 · E9Episode 9 10.0 / 10 · 1 published rating 2020-05-15 · 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.

S1 · E10Episode 10 10.0 / 10 · 1 published rating 2020-05-16 · 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.

S1 · E11Episode 11 10.0 / 10 · 1 published rating 2020-05-22 · 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.

S1 · E12Episode 12 10.0 / 10 · 1 published rating 2020-05-23 · 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.

S1 · E13Episode 13 10.0 / 10 · 1 published rating 2020-05-30 · 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.

S1 · E14Episode 14 10.0 / 10 · 1 published rating 2020-06-05 · 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.

S1 · E15Episode 15 10.0 / 10 · 1 published rating 2020-06-06 · 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.

S1 · E16Episode 16 10.0 / 10 · 1 published rating 2020-06-12 · 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.