Victor loses his job as a result of a work accident and is to be given a permanent disability pension. From then on, his life and relationship with his wife, Gloria, slowly deteriorates. The situation is made worse by the arrival of Gloria's sister, Eva. Victor is totally affected by his sister-in-law and her presence is the last straw, driving Victor into a spiral of violence and harassment that the two women are not able to stop. Eva and Gloria become convinced that Victor may end up killing them unless they do something about it.