Starts out good but loses its way
Firstly, this movie isn't really horror. There is a ghost that haunts a family and even a demon that follows, but it wasn't scary as much as it was a thriller.
Good things include the cast, cinematography and the grave exhumation themes. But the movie overall is very disjointed - starts out as a ghost story that focuses on a haunted family that is being protected by a team comprising a shaman, Feng Shui master (aka a Geomancer apparently) and a couple of others. Then they find something else underneath that unleashes something worse, at which point it gets fairly ridiculous and C-grade 70s horror level of absurd and campy scenes.
OK as a one time watch and not the best Korean horror to date by a long shot. Interested to see what some of the other horror fans here think of this flick. I rate it a 6/10.