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Two American college girls become the subjects of a sadistic medical experiment while on a road trip across Europe. Invited to a party by a handsome waiter, Jenny and Lindsay are en route to the festivities when their car breaks down in the middle of nowhere. Desperate, they decide to seek help on foot, eventually coming across the home of a retired surgeon named Dr. Heiter (Dieter Laser). Dr. Heiter is internationally renowned for his work on separating conjoined twins, but these days he's using his surgical skills for something entirely different. His goal is to create a human centipede by removing his patient's kneecaps, and sewing them together, mouth-to-anus. The only thing preventing Dr. Heiter from carrying out his experiment is a lack of human subjects. When Jenny and Lindsay arrive on his doorstep, Dr. Heiter enthusiastically begins prepping for surgery. The first installment of a two-film story arc, The Human Centipede was quickly followed by The Human Centipede II: Full Sequence.