Mr. Ortuzo and his wife Concheta invite a married couple, formed by a voluptuous blonde and a deaf-mute, to spend a weekend at his house in Tigre. Ortuzo is a millionaire poet who inherited a strange personality changing, the day is effeminate but at nightfall becomes "supermacho".
After the cruel murder of their parents 20 years ago, Rosa and María live alone in their isolated ranch. Nobody comes out alive from their farm. Some are killed in a bloody way, and then burned and buried.
Everything happens in Dr. Tristán's office when he closes the door. The most attractive women are stripped naked to be examined by the expert in "orthology", in an area where extreme care is required.
