Gurus in the late Goryeo dynasty try to obtain a fabled, holy sword, and humans in 2022 hunt down an alien prisoner that is locked in a human's body. The two parties cross paths when a time-traveling portal opens up.
- Year: 2022
- Country: South Korea
- Genre: Science Fiction, Action, Fantasy, Adventure
- Studio: Caper Film, CJ ENM
- Keyword: prisoner, alien, historical fiction, goryeo dynasty, past and present, time rift, taoist wizard
- Director: Choi Dong-hoon
- Cast: Ryu Jun-yeol, Kim Woo-bin, Kim Tae-ri, Choi Yu-ri, So Ji-sub, Yum Jung-ah