This movie has a very promising premise, but fell short of my expectation.
As a horror, it is not at all scary, leaving no fear in the aftertaste. As a psychological thriller, it lacks suspense and a logical plot development as well as world building. As a moral lesson, it could have done much better with more subtlety.
The only thing I like about it is the aforementioned opening scene and the wedding scene where tension is built up quite well.
A very ambitious hot pot, but not at all tasty.