Une famille américaine, en voyage en Irlande à la recherche de leurs racines, tombent sur une horde d'enfants mutants assoiffés de sang.

When Jenna asks her four hot girlfriends to help convert an old mansion into a Halloween Haunt, they decide to party instead! Things get steamy between the girls, until they accidentally unleash the half-pint, horrible Killer Eye, a perverse party crasher from beyond. Bent on having his way, the Killer Eye will stop at nothing until he gets exactly what he wants.