Well one can only hope it never involves things that are not "natural" - no pun intended. Losing a person you love can make one sad and grumpy ... and lose a bit of faith or whatever. Would we do anything to have that person back? Not that it matters (in real world terms) - but in (short) movies things can happen.
Things one does not expect or want of course. Visually this does quite a lot, that includes Special Effects, but also lighting! The set design is good too and the actors are up for the task. There has to be a bit suspension of disbelief (again we are outside ... our realm/real world settings) ... just go with it and if you like horror you will enjoy this for sure.
