Evil in the Woods is a mess of a movie. While intended more as a comedy (or possibly a spoof), there's relatively little humor to be found in the film. Instead you get random for the sake of random with odd editing compounding it.
The film is about a boy who finds a book at the library which talks to him (he can hear a voice narrating the story) and tells him about events occurring in present-day Mildew, Georgia. At times you forget all about the boy and the book except for the occasional segue card read by the narrator. The framework does little beyond linking together seemingly disparate film clips. If not for the rare interaction between characters in the individual subplots I would believe that they just mashed two or three separate movies together.
Most of the movie concerns a production crew filming a movie featuring bigfoot and aliens. They're having problems shooting the movie between equipment issues and crew members going missing. A local witch and her cannibalistic "family" is to blame. While we see this group often, very little is explained about them and their interactions with the others are limited. There's also a couple whose child has gone missing and a sheriff although they all have limited screen time. And a character who dies in a brief flashback early on.
The actual "evil" in the woods is never clarified. References suggest it to be some sort of entity although, within the context of the story, it could just refer to the evils going on in the forest (murder, cannibalism, witchcraft, etc). At any rate, the evil is billed as having been there for "three thousand and three years" and, whatever it is, the locals all appear too scared of it even to warn visitors.
All things considered, this should have really been a fun movie. The set-up is amusing, especially the scene with the librarian, but most of the time it's just dull and quite often confusing. It feels like the movie was squeezed together to compensate for missing footage, which could explain some of the random twists.