Some young people decide to party and spend the night in an abandoned house in the woods. One by one they are possessed by
something and the possessed start attacking the not-yet-possessed. We only get a semi-explanation for why and what's going on, but that's really all that's needed. It's not the most original story of all time, but it works.
This Swedish horror movie is like a modern Evil Dead with more realistic gore effects, but most else is sadly not up to the same standard as the old cult-classic. After an initial horror scene to set the tone, we get a superficial presentation of the characters and why they are going to the house. This part is rather boring. I understand that they want to set up the characters and story, but we get mostly uninteresting talking. No interesting stuff happening, no funny jokes, and no good buildup of what's to come. Regarding the dialog: the lines themselves are mostly realistic during this part. However, the delivery isn't always that realistic, but not bad enough to be funny.
The movie does get better once the horror begins. There are some creepy parts and excellent gore effects. Despite this being a low-budget Swedish horror, the effects are up to par with a modern Hollywood horror movie, so kudos for that. The acting even improves a bit. However, I was a little annoyed at times at the inconsistent behavior of the possessed. Sometimes they can't attack the humans fast enough, yet at other times they just stand there and look.
I would recommend this to someone who is mainly interested in seeing some nice gore.