A pair of dweebs are trying to vacation in the woods when they discover a crashed spaceship. They help the injured alien, who turns into a beautiful woman the next morning. Then with the help of their hillbilly friends the three take on the space preacher.
When an unscrupulous scientist drags his stepchildren out into the forest to use them as bait in the hopes of luring out a big foot, not even the team of hillbillies he hired can contain the horror they find: the horror of Mutantis! Only the adventurer Dr. William Fury may be able to stop the beast, but hope dwindles fast once Dr. Fury realizes that the monster is not only intent on murder but procreation as well. Could this be the end of the world as we know it? For the answer watch, Mutantis!
Deux jeunes gens se rendent à une soirée branchée, qui tourne très rapidement au massacre. Le tueur, masqué, repart avec l'une des invitées, aveugle heureusement. Celle-ci en tombe amoureuse, sans savoir qu'il est un être monstrueux et meurtrier, mais aussi en manque d'amour. Poète et philosophe, il a de plus un gros problème de communication avec son père clochard...