For ages, aliens have locked up their prisoners in humans bodies.
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.
CinePops US / International 
CinePops Spain 
CinePops France 
CinePops Italy 
CinePops România