The Guest

Crimes caused by mysterious powers take place. A psychic, a Catholic priest and a detective fight against these crimes.
Yoon Hwa-Pyung (Kim Dong-Wook) is the psychic. He was born to a shaman family. Yoon Hwa-Pyung seeks out those possessed by evil spirits and attempts to expel the evil spirits.
Choi Yoon (Kim Jae-Wook) is the Catholic priest. He is cynical and cool-headed. He doesn't like having relationships with others. He is recognized for his abilities as an exorcist.
Kang Kil-Young (Jung Eun-Chae) is the detective. She doesn't believe in evil spirts or exorcisms, but her views change because of Choi Yoon and Yoon Hwa-Pyung.