A breakthrough discovery has some horrifying consequences when scientists uncover an ancient alien skull and begin work to incorporate the advanced DNA into that of humankind to facilitate the improvement of the race. The aliens, however, who are by now a dying race, have big plans to use the new super-DNA to make their comeback. In order to get their hands on the goods, the alien demons transform themselves into beautiful women, who seduce the scientists in the hope of obtaining their secrets. If sex doesn't do the trick, however, these "women" have no qualms about turning the laboratory into a bloodbath, should the need arise!