Plot summary:
The film centres on an antagonist called Martin (Laurence Harvey), who becomes sexually obsessed with a DVD recording of the film within the film, The Human Centipede (First Sequence). In the DVD, a surgeon kidnaps three people and surgically connects them mouth-to-anus. Martin masturbates as he watches the film, with sandpaper wrapped around his penis. He subsequently creates his own twelve-person "human centipede" and gains sexual gratification from the pain, humiliation and suffering of his victims. He is shown to become sexually aroused whenever a member of his centipede is forced to defecate into the mouth of the victim behind them. Martin rapes the woman at the rear of the centipede, with barbed wire wrapped around his penis.[1]