Suddenly Jennifer is torn from her comfortable and non-assuming (inconspicuous) life. While planning to move, the young mother and her husband will experience anything but an ordinary day! It all begins with a strange visit from her soon to be ex neighbor, the postman who mentions an urgent need. Later, when coming home from grocery shopping, Jennifer discovers an elderly neighbor, who is her son Niko s babysitter has disappeared. She also receives a terrifying and disturbing letter. The fateful delivery contains a macabre death poem by yet another occupant of her building, plus some compromising sex photos of her husband and the missing babysitter! To get over the initial shock of this disturbing news, she decides to take a bath, and promptly falls asleep in the bathtub. When she awakes, she finds herself on the floor of her apartment covered in blood and body parts! Centre to this surreal and horrific scene is a mysterious masked man who promises to lead Jennifer on the right path ...

After 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.