Two women, wanting to get away from their troubles for a weekend, pack up their kids in a mobile home and go on a camping trip. Along the way their camper breaks down and they and their kids find themselves under attack by a band of inbred, redneck cannibals.

People are dying mysteriously and gruesomely, and nobody has a clue what the cause is. Only health worker Mike Brady has a possible solution, but his theory of killer slugs is laughed at by the authorities. Only when the body count begins to rise and a slug expert from England begins snooping around does it begin to look like Mike had the right idea after all.