Lee Min-ho
Lee Gon
A modern-day Korean emperor passes through a mysterious portal and into a parallel world, where he encounters a feisty police detective.
Lee Gon
Jung Tae-eul / Luna
Jo Eun-sup / Jo-young
Kang Shin-jae
Goo Seo-ryung / Goo Eun-ah
Lee Rim
Lee Jong-in / Prince Boo-young
Noh Ok-nam
Jung Do-in
Song Jung-hye
Park Moon-shik
Jo Hae-in
Lee Gon's Secretary
Jang Michael / Jang Mi-reuk
Myung Na-ri / Myung Seung-ah
Seok Ho-pil
Kim Hee-joo
Kim Ki-won
Young Lee Gon / Lee Ji-hun
Young Jung Tae-eul
