S. I. D.

As a child, Si Mun can see and communicate with ghosts, a gift he inherits as the grandson of a famous shaman. His grandmother gives him a talisman that temporarily suppresses his ability and erases his memories of the supernatural events he has witnessed. Years later, Si Mun works as a homicide detective in the Korean police force, leading a hectic but otherwise ordinary life. With his grandmother gone, the powers she sealed away begin to reawaken.