It was supposed to be a fun weekend camping in the mountains. Things don't always go according to plan. When an experimental new diet pill goes horribly awry, a disparate group must work together to try to stop the zombie apocalypse from destroying the world as we know it. As if zombies weren't bad enough, things get more complicated when one of their number starts to go a little crazy and they have to worry about the potential psycho-killer in their midst. When life turns into something ripped from the screens of horror movies, we all know that not everyone will make it out alive. But with the combined survival knowledge of horror movie buffs Lucy and Mac, some of them just might make it to the sequel.