El cianuro… ¿solo o con leche?.

A decrepit house in Badajoz, Spain, on a cold winter night in 1925. Laura and her mother Adela, who is confined to a wheelchair, are faced with the possibility of putting an end to the grumpy grandfather's life, who is around ninety-two years old. But then, suddenly, cousin Enrique, a doctor by profession, shows up, which will change the course of events…