Cinco estudiantes de distinta educación, formación y gustos son castigados a pasar un sábado en el instituto en el que estudian. Pronto las desavenencias entre ellos aparecen, especialmente cuando el director que les vigila se ausenta del aula.
Sinopsis en inglés:
Five teenagers head off for a weekend at a secluded cabin in the woods. They arrive to find they are quite isolated with no means of communicating with the outside world. When the cellar door flings itself open, they of course go down to investigate. They find an odd assortment of relics and curios, but when one of the women, Dana, reads from a book, she awakens a family of deadly zombie killers. However, there's far more going on than meets the eye.