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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
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Apr 17, 202073 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.
Apr 18, 202073 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.
Apr 24, 202072 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.
Apr 25, 202073 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.
May 1, 202073 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.
May 2, 202073 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.
May 8, 202073 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.
May 9, 202073 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.
May 15, 202072 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.
May 16, 202073 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.
May 22, 202072 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.
May 23, 202072 min
Frightening circumstances land Tae-eul back in Gon's arms. When Yeong runs into a woman who looks strikingly familiar, he follows her.
May 30, 202073 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.
Jun 5, 202072 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.
Jun 6, 202081 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.
Jun 12, 202077 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.
