During a stopover in Germany in the middle of a carefree road trip through Europe, two American girls find themselves alone at night when their car breaks down in the woods. Searching for help at a nearby villa, they are wooed into the clutches of a deranged retired surgeon who explains his mad scientific vision to his captives' utter horror. They are to be the subjects of his sick lifetime fantasy: to be the first to connect people, one to the next, and in doing so bring to life "the human centipede."

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