A peaceful morning. A leisurely breakfast scene of an ordinary family: father, mother, eldest daughter, second daughter, and eldest son. A commotion ensues when a man with a gun intrudes. The man begins to reveal the sexual habits of each member of his family, and while holding up a gun, tells them to recreate their sexual habits here. The mother masturbates with a vibrator, the eldest son has incest with his girlfriend's sister, the father secretly films the second daughter's naked body. The man's desire gradually escalates...

A young wife is murdered by her husband who drugged her and left her on a railway. Her severed head soon starts to exact revenge on the murderer.

Masako, the young lady of the family estate, returning from overseas following the death of her diplomat father. She had originally left in opposition to his second marriage to the avaricious Tomoko, who now parades her new lover Goro around the house as if it were her own. When the family lawyer informs the gathered masses that it is Masako who is the legal inheritor of the entire estate, her elder sister Sumie and fiance Shinjiro join Tomoko and Goro in hacking up the unfortunate heiress with an axe. It is not long before the assorted pieces of Masako begin cropping up to drive them all insane, followed by her apparition in the traditional white smock with eyes peering wildly through straggly black hair.