I was expecting this to be a remake of Texas Chainsaw Massacre, but directed by PETA. That's kinda what it is and it really feels like a feature length PETA demonstration. The only twist for me was that they ripped off Hostel as well (but even that isn't actually a twist, so no need for spoiler warnings).
So imagine a bunch PETA activists desperately trying to remake Hostel - that's pretty much all it is. All the symbolism is so totally obvious and in your face that it seizes to make any sense as a horror movie and even seizes to have any relatable plot at all and becomes a mere campaign for animal rights. The only problem is that it even fails at that, because we already know that hamburgers don't grow on trees, so for the movie to be effective as an animal rights campaign it's not enough to simply shove the facts about how cows are treated down our throat, because most of us already know that and we don't care because we don't really relate to their suffering. Now the movie tries to do exactly that, but fails at exactly that, because in order for us to relate to the suffering on an emotional level, the movie would need a relatable plot and relatable - or even remotely likable characters and it just doesn't have any of that...
