fter a tragic car accident where his girlfriend Ryôko Ooyama (Nami Tsukamoto) died, Hiroshi Takagi (Tadanobu Asano) suffers amnesia with his memories completely blanked. When he sees a book about dissection, he decides to join the medical school with the support of his parents. In the dissection class, his group participates of the autopsy of a young woman, and while cutting apart the tissue, he partially recalls his accident. Later, when he sees a tattoo in the arm of the corpse, he discloses that she was his girlfriend and becomes obsessed to go further in the examination of the body.

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