This movie had interesting potential. It was an all-encompassing horror hybrid of summer camp slasher, zombie, hillbilly cannibal, horror comedy etc. And then, as multiple people have pointed out, the movie abruptly wraps up DURING the climax with a slapped on montage that resolves nothing. Terry Gilliam and David Lynch have made good movies out of unfinished pieces, but not these jokers.
The basic plot is six teens sent to military school. Three male, three female. We get bits and pieces of their stories, but it doesn't matter because they have no resolution. Dave Franco is the only thing resembling a star and as usual he gets no screen time. He spends most of the movie locked in a box. Somebody wrapped in bandages purporting to be him frames the movie, but it looks like they got a woman to play him. The military school is run by Nazi kinksters and this provides some elements of humor. A mistreated hillbilly cook gets revenge by giving the counselors food poisoning, which leaves them crazily sick for what seems like half a day and then suddenly turns them into cannibal zombies, who sort of act like cats. In spite of the fact that we've seen the meat being poisoned and fed to the counselors, the movie spends ten minutes of plot having an emo biology student cut apart a dog to discover the cause. In a normal movie, he might also discover a cure or something to bring the film to a resolution, but that does not happen. Much time is spent on attempting to find keys to free Dave Franco. Whether and how these keys are used remains a mystery. There's some intrigue and tensions and attempts at character building between the campers, and it's all a waste of time.
It is actually a shame this movie is not 20 minutes longer or could not use its 80ish minutes better. They could have had something, but there is no payoff. And there was no artistic purpose for a lack of payoff. They simply lost film or lost funding.
And what is the conspiracy not to give Dave Franco screen time, even in a movie with no stars? It's bewildering.